Read here: "My dedicated/hosted server broke after patch."

Comments: 97

• 23 Mar, '21
  gczuczy

  I have no mods on my dedicated server. When I'm trying to update it, I'm getting the following error message:
  Steam>app_update 8896660
  ERROR! Failed to install app '8896660' (No subscription)
  
  It's a vanilla install. Could you please tell me which do I need to remove to get the update working?
  And yes, I've tried updating with an anonymous login, a separate-for-steamcmd steam account, and also using my main steam account which has valheim purchased, all giving the same error. Would be awesome to know which mod do I have to remove from this vanilla dedicated server to get the update working...

• 23 Mar, '21
  Birch

  After updating my dedicated server, the connection is still lost. Did not change anything in firewall rules, and still https://geekstrom.de/valheim/check/ shows that my query ports are not available. Server starts normally, no messages in logs, no nothing...i've tried to troubleshoot it for 2 hours and failed, so any ideas?

• 23 Mar, '21
  Reijen

  I run a server with ZERO mods and I cannot connect to mine due to "Incompatible Version" - I have restarted the server several times and triple checked to make sure that the "Auto-Updates" option is on.

• 23 Mar, '21
  James Aldridge

  It is unplayable on my alienware laptop and pc after updating this morning. Constant hard crashes, every few moments. I updated steam and my dedi server through gportal. I have never used mods before. Besides the updates through steam and gportal Im not sure how else to make sure everything is on the right client number

• 24 Mar, '21
  Zorb

  Hosted server (GTX Gaming)
  No mods
  Tried exsting world and a complete vanilla reinstall
  Server and clients are all on the latest version (0.148.6)
  Since patch everyone is being disconnected after anything between 30 seconds and 10 minutes with the same error message:
  
  Failed to send data k_EResultNoConnection

• 24 Mar, '21
  Arturo

  I updated my hosted server and my local copy of the game yesterday and since then I cannot connect to the server. Other players can still connect, but I cannot. After entering the server password the game loading screen shows up for a few seconds and then I get kicked back the character selection screen with a 'Disconnected' error message. I am running 0.148.6 on both.

• 24 Mar, '21
  Olav Bakken

  We have a dedicated server that has become unplayable after paths.-.- clients is up to date, steam is up to date and server is up to date... No mods. We can play for a few minutes, the a huge lag, everyone gets disconnected, and no one is able to reconnect to the server for a few minutes

• 24 Mar, '21
  Melgarh

  Hi, I run vanilla server with ZERO mods and after running the update and updating the Dedicated start server batch file the server starts succesfully but it is not visible nor direct connection is not possible. It was working up until that moment, its dedicated server, no FW change, no Windows update. I've deleted the game directory on the dedicated server and re-run the entire update install from scratch, server starts no problem but still not visible anymore. The 2456/2457/2458 are both UDP and TCP allowed and correctly directed (Rust/Factorio/Valheim run for months just fine).
  
  What information would help you to debug this?
  
  It has also started disconnecting from the Game Server: https://imgur.com/psz9TH3

• 24 Mar, '21
  Chiron02

  My dedicated server hasn't worked since the patch yesterday. I've tried updating it multiple times. Every time I try to join I just get an "Incompatible Version" error. There's even articles out already that are reporting the servers aren't updating properly when you enter the app_update 896660 validate command, it validates but isn't updating. So they recommend making this update.bat file. But no matter what I've done I haven't gotten that update script to work and I don't understand what I'm doing wrong.

• 25 Mar, '21
  Smiffe Admin

  Question to everyone with issues: Do you know the minimum requirements for your servers?
  Atleast 4-8Gb RAM (the more RAM, the more users and world that is explored and how big your worldsave is. (100Mb or larger)
  What CPU do you use? Intel® Core™ i3-4330T Processor or better would be recomended.

• 25 Mar, '21
  Smiffe Admin

  If you join via the ingame server-list feature. and then you get disconnected after a while (1-10 minutes) Try to join through steam-serverlist or direct-IP join in the game client. This might help people with cheaper routers who dies from the ingame serverlist ping-replies.

• 25 Mar, '21
  Melgarh

  @Smiffe:
  Dedicated O2 datacenter VM 6-core Intel Xeon, 12GB RAM, 150GB Gold-tier disc (SSD), 10Gbps internal LAN, 100Mbps Internet
  
  I'm going to reinstall the entire game and run an entirely fresh world from the server. I'm using the anon account for steam to run the dedicated server - did you change anything on that part?

• 25 Mar, '21
  Smiffe Admin

  @melgarh.
  Nothing should have changed on that part.

• 25 Mar, '21
  MS

  Up to the latest patch 0148.6 everything worked fine. Since then no one could connect. The client versions are 0148.6. The server build is 6394774. No update available. It is no firewall problem, the incidence is definately due to the patch. We have no mods nor anti virus running. It's a linux game server running LGSM with several games. Only VH doesn't run, no connection possible.

• 25 Mar, '21
  Kristjan Luuk

  Smiffe Admin
  Question to everyone with issues: Do you know the minimum requirements for your servers?
  
  So with that update minimum requirements went up? Atleast that would be only reason to ask that question. Since before that update all worked well with my server. And i know server work since my friend is playing on it. Just i cant log into it. And server is in my local network.

• 25 Mar, '21
  Smiffe Admin

  @Kristjan Luuk
  The minimum requirements haven't gone up AFAIK. it's always been "3Ghz processor, 4-8Gb ram"
  The information about the min-specs should be in the dedicated server FAQ files

• 25 Mar, '21
  Smiffe Admin

  @ms
  
  Strange.. I run a dedicated with 6394774 build version. and I have no issues :(
  have you checked so your bat.file didn't reset or something?

• 25 Mar, '21
  MS

  @Smiffe bat on LINUX? I checked everything what I could (common.cfg, services, details, monitor, update) everything is fine as it should be.

• 25 Mar, '21
  James Palaclop

  SO , since the last patch on dedicated server , every client get disconnected when the world is saving...There was no problems like this before and i made no change , the server is hosted by G-portal and are really good in quality so i dout it's an hardware problem , any idea ?

• 25 Mar, '21
  Smiffe Admin

  @MS
  What you could test is to save the setup file you changed. "start_headless_server" file somewhere. And then verify all files in the steam library launcher until you get no errors. then re-apply the "start_headless_server file" again.
  
  It might work :/

• 25 Mar, '21
  Smiffe Admin

  @James Palaclop The new settings is ment to disconnect after a while when servers isn't responding. do you have a timer for how long it does take to save for your server?
  I tried to quickly get a grip on the hardwave on a Valheim server on g-portal, but I couldn't find those details :/

• 25 Mar, '21
  Thomas Ryan

  I have an odd one where I get one player that receives a disconnected message after inputting the password to the server I run (disposing socket error in logs), but myself and another player can connect fine. We could all connect just fine before the update. I am running the server on my PC with all server ports open, and I have an i9 10850k, with 64GB RAM! Firewall is set up correctly as well!
  
  03/25/2021 20:11:24: Server: New peer connected,sending global keys
  
  03/25/2021 20:12:06: ZRpc timeout detected
  
  03/25/2021 20:12:06: Closing socket 76561198144403629
  
  03/25/2021 20:12:06: send queue size:0
  
  03/25/2021 20:12:06: Got status changed msg k_ESteamNetworkingConnectionState_None
  
  03/25/2021 20:12:06: Disposing socket

• 25 Mar, '21
  MS

  @Smiffe: Once again I am NOT on Windows, I have NO start_headlesser_server.bat. But I found the problem: CPU load now must have a lot of space. I cannot login when CPU load is higher than (aprox.) 80%. I stopped other services, have a CPU load under 50% and now it works. Jeez.

• 26 Mar, '21
  Lux

  I've been unable to log in since the patch. I can input the password for either dedicated server I play, but then get disconnected after the loading screen.
  
  I have tried a complete and clean reinstall. There are no mods. The main server I play on has had files verified and has been rebooted. I have tried turning off cloud sync. Client and server are both up to date and on the correct version. The two friends I play with are able to log in on either server with no issues.
  
  My laptop is a little older, and doesn't -quite- meet minimum requirements listed for the game, however it WAS playing decently up until the latest patch. I use an Alienware laptop, Windows 10, a 2.4 GHz quad core processor, NVIDIA GeForce GT 750M, 8 GB RAM, with DirectX 11. As stated before, the game played okay until 0.148.6
  
  My log, like others, has a no connection error. Specifically:
  
  Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)
  
  Failed to send data k_EResultNoConnection

• 26 Mar, '21
  Smiffe Admin

  @MS
  
  What kind of CPU do you have and RAM on your hosting computer?
  That's a very good find from you. I will forward your findings!

• 26 Mar, '21
  Smiffe Admin

  hi @Thomas Ryan
  
  ZRpc timeout timer is set to 30 seconds. it's a new check if your not connected to the server, it will disconnect you to prevent server issues :/
  Like things not saving, things dissapearing and such.

• 26 Mar, '21
  Kvadratukas

  @Smiffe
  
  So if someone takes longer than 30 seconds to load in it boots them out?
  
  *Edit: If so, is there a way to change that so people with slower pcs could log in to the server?

• 26 Mar, '21
  Brodie

  I have been having a similar issue. I'm hosting a NON-dedicated server that my friend and I have been playing on, hosted by me, for over a month. We tested without mods, fresh installs (and yes, I mean I deleted the actually files instead of just "Uninstalling from Steam"), tested to see if its a version mismatch (we both have the new update), port forwarded every port needed ( if i recall, the port local hosted servers use is default 27015, but needs 27016 as well cause of the +1). When she disconnects or I disconnect trying to connect to her (different world), the log says we connect, but timesout with "ZRPC Timeout". You say its a new check, but then isnt that the issue? If its new, then its causing problems, and needs to be looked at. If its really not the issue, and is instead detecting the reason, im more than willing to help you admins out with any more info I can provide.

• 26 Mar, '21
  Rocky

  Since patch on hosted dedicated server, we would get random disconnect icon on top left of screen. Sometimes it goes away and sometimes it will actually disconnect you. This happens whether I’m the only player on or multiple players are on. Trying to quickly log back on says disconnected. Waiting couple minutes can log back on.

• 26 Mar, '21
  Morty

  Hey @Smiffe, thanks for your reply clarifying the ZRpc timeout. We have a friend who is running the game on an older laptop, who used to be able to play the game with us before this update though on lower fps, but now he just can't connect to the server due to timing out. We tried multiple fixes to find the cause and reading the server log and your message has clarified what the issue is. Is it possible to increase the timeout to a minute or have an alternate loading system which will allow my friend to connect. We really like the game and would like to play together.

• 26 Mar, '21
  Thomas Ryan

  @Smiffe
  
  Thanks for your reply.
  Is there any way to change this manually?

• 26 Mar, '21
  MS

  @ Smiffe: I installed a server from 2013 using vmware. This one has two old 2.4GHz Xeon CPUs. I copied the VM from out of the production server. Starting the VM with 1 CPU and 1 Core: No login possible. Then I added 2 CPU and all 16 Cores per CPU, no login problems all the time. It's obviously that CPU power is necessary for login (which is no good programming design at all since we are talking about handshaking).
  P.S.: I am out here. Deleted all the VMs. I paid for a game with support which does not happen. Good luck ...

• 26 Mar, '21
  val49

  I cannot connect to any server anymore (whether it is dedicated or local), like many other players. I can only connect to my world. It's impossible to play in multiplayer since the last patch. I also get this message : Failed to send data k_EResultNoConnection several times. All was working perfectly fine before the patch.

• 27 Mar, '21
  Trish

  Having this issue on a standard server (not a dedicated server). Prior to patch, friend and I could play just fine. Since update, he cannot connect to any of my saved games (but I can connect to any of his). His game is up to date (we checked, and verified files). We've tried running the game as administrator, and different methods of joining the game, none of which are working. This patch has definitely broken the game for him.

• 29 Mar, '21
  Sam S

  I am getting a similar error to James Palaclop. It appears that whenever the world saves, everyone is disconnected. I'm using a i7 4770 with 8gb of ram and an SSD, all hosted on a personal dedicated machine. We encountered no issues prior to the most recent patch. Interestingly enough, after some testing I was able to play for three consecutive days in game without issues, but after I disconnected the server forze and I was unable to reconnect.

• 29 Mar, '21
  Gabriel Martinez

  Still getting disconnected sometimes after 1 min login other times after 10 to 20 mins. getting annoying this started after last patch.

• 30 Mar, '21
  Smiffe Admin

  @ Gabriel Martinez
  
  What kind of connection do you have?
  Do you connect via the ingame list?
  Try to connect throught steam list instead and see if that helps you.
  Or steam friendslist and click "join" on a friend already playing.

• 30 Mar, '21
  Talernar

  Talernar
  was Bought the game from a friend on steam, he rents a server through logicservers, i can play the game fine single player but when it comes to using my friends server it doesnt show up on server list even when searching for it Brothers of Ragnarok is the server name; will let me get up to the password option then black screan for 1-5 minutes then load screan(with pic) then goes back to main menu with disconnected message,
  i have tried almost all the online fixs e.i port forwarding reinstalling etc i have updated the server and made shore all running same version of game, but still keeps kicking me, there is about 5-6 people playing but still i get disconnected.
  if im watching the server info and trying to join it shows that i join withing the black screan time but before load screan server will show i drop and the sends me to main menu,
  my system is a asus m5a78l-m (MB) 6 core amd FX(tm)6300 3.50GHz 16.0 GB ram nvidia geforce GTX10550 Ti
  virgin medie hub 3

• 30 Mar, '21
  Sascha

  hey ..
  My dedicated server has a problem after the update. When i save the game via the console "save" i am immediately disconnected. If the server saves the game after about 20 minutes, I will also be disconnected.The network symbol appears at the top left and disconnect 3 seconds later .."Failed to send data k_EResultNoConnection"

• 30 Mar, '21
  Harmony

  Having same problem.
  Running server on Linux.
  Metal machine (not VM), everyone is connecting via local network.
  We have tried connecting via in-game list as well as steam (steam does not acknowledge existence).
  Everything is up to date and validated.
  My computer (running same OS as server: Ubuntu-flavored Linux) is able to connect. The other player (running a windows 7 machine) is not able to.
  Server has 16G ram and 6Ghz 8-core processor and 2TB of hdd.
  Windows player has trouble connecting when I host off my personal machine as well.
  Windows 7 machine can host, however, and I can join.
  
  This implies to me it's a problem with the windows client (which takes a strangely long time to attempt to connect before getting discord.)

• 30 Mar, '21
  Logan

  Game worked connecting via in-game server interface since EA launch. Many hours of no issues. NOW:
  Just repeatedly get "disconnected" error. Player log always has the same lines, many many times about half way through the successful lead up:
  
  (Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)
  03/24/2021 18:40:12: Failed to send data k_EResultNoConnection
  
  I can create a game and start the server and my friend can connect to my game. I can run a game solo, no problem. However, EVERY time I try and connect to my friends world that I've been playing on for weeks, created by friend, prior to patch...I get "DISCONNECTED" error.
  
  I've uninstalled/reinstalled/updated STEAM, uninstalled/reinstalled/updated VALHEIM, removed all extraneous commands in the boot up config and stream launch options, tried to connect directly via STEAM friends list "JOIN GAME," tried to connect via Steam server list, NOTHING works. Still get "disconnected." NEVER get in GAME.

• 31 Mar, '21
  Wonderbread

  @smiffe i am getting the ZRpc discontect I am running a Nvidia GTX 960, AMD FX 8350 Eight-core processor with 8gb ram, win10 pro OS build 19042.867 my internet speed is 30mb up and 5mb down. and I am getting this ZRpc disconntec when trying to play with my friend this is well over the minimum you have on steam is there a way to change somthing to play online on servers?

• 31 Mar, '21
  Atreus Starr

  my friend is running a server (from a laptop I think), and after this most recent patch we (myself and another friend who play on the server) can't connect ("failed to connect"). not sure what's up, he's tried everything on his end and he's Comp. Sci. major so he knows how to run this kind of stuff.

• 31 Mar, '21
  Johan Sandström

  Same issue here, the hosted gameserver throws a randomly disconnect with the "ZRpc timeout detected"-error.
  
  This started occuring after the last patch (0.148.7).
  
  03/30/2021 23:50:23: ZRpc timeout detected
  03/30/2021 23:50:23: Closing socket 76561198398914422
  03/30/2021 23:50:23: send queue size:0
  03/30/2021 23:50:23: Got status changed msg k_ESteamNetworkingConnectionState_ClosedByPeer
  03/30/2021 23:50:23: Socket closed by peer Steamworks.SteamNetConnectionStatusChangedCallback_t
  
  Our gameserver is Vanilla and hosted by HostHavoc (Intel Xeon E5-1650 v2 @ 3.50GHz, 1000Mbps).
  
  On a side note: The comment in the original post "..vanilla dedicated server works fine in the tests we have done.", is unnecessary. Just because the server is working for you, doesnt mean there isnt a problem, and you should adress the issue instead of trying to shift the blame on your paying customers.

• 31 Mar, '21
  Smiffe Admin

  @Johan Sandström
  You are totally right. I should not blame customers!
  
  Shall ask our programmer to look at the ZRpc timer.
  The timer should disconnect after 30 seconds. so if a save takes longer than 30 seconds, somethings could be wrong is out thought behind the timer being there.
  
  What kind of disc does your server have?
  Can you find out the write time it have for saving your world file? (and how big is your worldfile?)

• 31 Mar, '21
  Smiffe Admin

  Could I have some dedicated server stats from all of you with issues?
  CPU, RAM?
  server Connection type? cable? wifi?
  player computer connection type? WIFI?, 4G? 5G? modems? ADSL? Fiber?
  Worldfile size?

• 31 Mar, '21
  Johan Sandström

  The databasefile (Luntertun.db) is 39MB, and the worldfile (Luntertun.fwl) is 45 bytes.
  
  As for memory: I believe for Valheim it is uncapped to the server limits (60gb). I do not think it's remotely possible to get near that at this current time.

• 31 Mar, '21
  Jocra

  Hello dev.
  My server & client both has update to 0.148.7 at time it was released. For a few hours after updates, everything is just OK. But a day after that, I can`t connect to it via client till just now. And I check my server which is 121.5.59.19 on https://geekstrom.de/valheim/check/, it`s all OK too. I really need some help. THX.
  
  CPU 2CORES
  RAM 4GB
  server Connection type: Tencent Cloud CVM
  player computer connection type:4G or WIFI
  Worldfile size: 84.46MB

• 31 Mar, '21
  Dizzid

  Greetings! Many times I started a dedicated server on my PC and always encountered an administration error. When trying to issue items through the console, the commands did not work, although the file as prescribed by the manual to the dedicated server Steam account ID was added

• 31 Mar, '21
  Johan Sandström

  I managed to fix the ZRpc issue on my own, by changing the class m_timeout, from 30 seconds to 300 (in the file assembly_valheim.dll).
  
  Now the game works again.

• 31 Mar, '21
  Wonderbread

  so it all the server and friend I try and connect even new seeds to on my Pc it is hard-lined into my cable modem Arris sbg6900-ac and all my friend have no problem if I host the world.

• 31 Mar, '21
  Logan

  Keep in mind that this is NOT a dedicated server ONLY issue. We're having this issue using the in-game "Start Server/Community Server" option. I do not use a dedicated server... I've tried that since broken patch and get the same problem.

• 01 Apr, '21
  Smiffe Admin

  @Johan Sandström
  
  How much is the RAM on your server?
  Such a small worldfile shouldn't take more than 2-3 seconds to save :O
  For how long does your dedicated server run at the time?
  Was the issue always there for you? or did it gradually become worse?

• 01 Apr, '21
  Johan Sandström

  Smiffe, to speed things up a bit and to identify the issue properly; have the studio contact me directly if they want help identifying this defect. I run a very successful testing company, based in Stockholm, Sweden. We have already worked with studios such as Blizzard, Avalanche, Massive. Perhaps we can help you pro-bono - for this "first" defect - which obviously is having a rather forceful impact on its player base.

• 01 Apr, '21
  Matthew

  Me and my fiancé are having this issue as well. It is a LAN dedicated server (hosted from my computer) but only 2 of us connect to it. Currently have 32GB of RAM, Intel Core i5-7600 @ 3.8 GHZ processor. We are connected over WIFI, but it is a top end unit (Nighthawk R8000P). The issue happens sporadically. Sometimes she can play for hours without an issue, sometimes she has disconnects back to back. It appears to happen frequently when sailing or doing numerous inputs at once, but I'm not sure if that is limited to the issue.
  
  My understanding of the issue is ZRpc timeout occurs because the server is looking for a ping back from the computer every second, and when for 30 seconds it does not receive a ping from the client, it will disconnect them. Increasing the ZRpc timeout in the DLL would likely just increase the time until the client disconnects. I will post server logs of a disconnect after this message.

• 01 Apr, '21
  Matthew

  [Info : Unity Log] 7:54 AM [Info] [Valheim] [Chat] [Shout] Rachel said: I have arrived!
  7:54 AM [Info] [Valheim] [Chat] [Shout] Rachel said: I have arrived!
  (Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)
  
  [Warning: Unity Log] 04/01/2021 07:58:48: ZRpc timeout detected
  
  04/01/2021 07:58:48: ZRpc timeout detected
  
  (Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)
  
  [Info : Unity Log] 04/01/2021 07:58:48: Closing socket 76561198295364471
  
  04/01/2021 07:58:48: Closing socket 76561198295364471
  
  (Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)
  
  [Info : Unity Log] 04/01/2021 07:58:48: send queue size:0
  
  04/01/2021 07:58:48: send queue size:0

• 01 Apr, '21
  Matthew

  Another update, the disconnect has occurred 4 times in the last hour, all while we were sailing together. On my end, the boat freezes up and stalls under the water until the other player completely DCs, then the boat remerges out of the water and takes moderate damage. This happened once when the serpent attacked us as well, and the serpent froze until the other client completely disconnected and began moving again (similar to the desync issue that occurred frequently last patch). On my fiance's end, she receives the lost connection symbol in the top left corner and none of her actions are registered. After 30 seconds, she is disconnected from the server.

• 02 Apr, '21
  Jocra

  OK, here is new. I`ve figured out what was happened. I found it can be connected only after re-login my steam account.

• 02 Apr, '21
  Sam S

  Something that I have discovered is that if I add -console to the server's batch file within windows, the server stops losing the connection. Check my previous post in this thread for context.

• 02 Apr, '21
  Johan Sandström

  Copying the world-files to my local machine lets me play locally.. just not on the dedicated server.. :/

• 04 Apr, '21
  Zenon

  I'm also getting the ZRpc error disconnect most of the time. Only rarely in the past few days have I been able to remain logged in for more than 2-3 minutes. I've lost materials because of this (when putting in chest during the network-connection-flashing icon, they disappear from inventory but won't be placed in the chest on the server)
  
  Here's my logs, I only replaced my SteamID with _ instead: (comment ran out of space, posting full logs in next comment)

• 04 Apr, '21
  Zenon

  (log w/ repeated info removed to fit comment length restrictions)
  
  (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
  04/04/2021 19:04:06: Got status changed msg k_ESteamNetworkingConnectionState_Connected
  (: .. Line: 35)
  - 19:04:06: Connected
  (: .. Line: 35)
  - 19:04:06: Got connection SteamID _
  (: .. Line: 35)
  - 19:04:06: Got handshake from client _
  (: .. Line: 35)
  - 19:04:10: VERSION check their:0.148.7 mine:0.148.7
  (: .. Line: 35)
  - 19:04:10: Server: New peer connected,sending global keys
  (: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
  - 19:04:29: Got character ZDOID from Zenon : -81470851:4
  (: .. Line: 35)
  - 19:05:47: ZRpc timeout detected
  (: .. Line: 35)
  - 19:05:47: Closing socket _
  (: .. Line: 35)
  - 19:05:47: send queue size:0
  (: .. Line: 35)
  - 19:05:48: Got status changed msg k_ESteamNetworkingConnectionState_None
  (: .. Line: 35)
  - 19:05:48: Destroying abandoned non persistent zdo -81470851:4 owner -81470851

• 04 Apr, '21
  valheim_praxis

  For Logan and anyone on Windows with a "disconnected" error when trying to join a dedicated server that some folks are easily able to join but others aren't, and "Failed to send data k_EResultNoConnection" appears repeatedly in the Player.log
  
  Check your power options at Control Panel -> Power Options. Mine was inadvertently set to Power Saver, and I was able to join after switching to High Performance. You may also need t add the following lines to the top of your boot.config file in the Valheim -> valheim_data directory:
  gfx-enable-gfx-jobs=1
  gfx-enable-native-gfx-jobs=1
  
  This was after trying literally everything else over the course of a week, reinstallations, network resets, Steam client adjustments, etc. I suspect I got this disconnect issue after 148.6 because my GPU specs are pretty weak (AMD HD 7850) , but I cannot be sure.

• 04 Apr, '21
  Ray Sandhu

  @Smiffe @Johan Sandström
  
  I had the exact same error logs as @Johan Sandström and (being a dev) looking at the server and client logs it felt like a timeout issue. After reading these posts, I took the same action as @Johan Sandström and increased the timeout too 300 from 30 in the assembly_valheim.dll (took me a sec to figure out how). This worked immediately for my friend connecting from a slower computer. I have logs etc. and can fill in more info if needed or you can feel free to ping my email.
  
  Thanks everyone, the game is amazing!

• 05 Apr, '21
  Ravenloft

  I'm running a dedicated server on a RPi4 (8GB overclocked to 2.15 GHz) running Windows on ARM, and have been for a couple months with no issues until the last patch, now every once in a while players will get the Server Ping / Disconnect flashing icon in the top left of the screen. I may not be meeting the minimum requirements, but it was running just fine previously.

• 06 Apr, '21
  David Swift

  I am getting the Incompatible error when trying to play my dedicated server. I have updated both the server (Ubuntu) and the game (Windows 10) and still can't play the game. Any suggestions?
  
  Server build: app 896660, build 6437354
  Game build: app 892970, build 6437353
  
  uninstalled/reinstalled game (win) no luck.
  
  p.s. have several hours in-game with this set up so it's a working setup before updates.

• 07 Apr, '21
  Smiffe Admin

  @Johan Sandström
  And if your play-buddies join your local hosted world with the ingame settings?

• 07 Apr, '21
  Smiffe Admin

  @Ravenloft
  it could have been yes.
  About 3Ghz processor, 8Gb Ram is what you need for a world after a while

• 07 Apr, '21
  Smiffe Admin

  @David Swift
  The same game versions on both client and server? Only thing I could see that would trigger that response :/

• 07 Apr, '21
  Ray Sandhu

  @Smiffe I had the same thing as Johan. I could play the world file locally but a friend on a "slower" computer could not connect to my dedicated server until I up'ed the m_timeout in ZRPC. The same friend also could not connect to the same world if I played it as a locally hosted world.
  
  However, I did have a second friend who could connect to both instances (nicer computer).

• 08 Apr, '21
  Johan Sandström

  @Smiffe playing locally on my personal hosted environment works like a charm (even together with 9 other players).
  
  The Timeout issue occurs only when using a hosted environment (such as HostHavoc).. had to cancel the subscription we had with HostHavoc due to this. Shame, they have some nice specs in their servers.

• 09 Apr, '21
  Smiffe Admin

  @Johan Sandström
  I wonder if the issue was the hosting company doesn't give you enough RAM (for example) to run Valheim reliably? I took at look, and I couldn't find anywhere where they told me how much RAM I would get :/
  
  What are your specs on your own hosted server?
  about 3GHz, 8Gb ram? or better?

• 09 Apr, '21
  Smiffe Admin

  @Ray Sandhu
  Do you have the specs of your 2 friends computers?
  and perhaps what kind of NAT connection? and what kind of internet connection overall? (wifi or 3G, 4G, 5G modems are specially interesting to know if they use)

• 09 Apr, '21
  QuirkyStreet4288

  Help me.. valheim Network problem...Icons appear at certain intervals. few 10 minute or 30 minute or 50 minute. and Server disconnected..
  I suspect I got this disconnect issue after 148.6 because my GPU specs are pretty weak (Intel(R) HD Graphics) , but I cannot be sure.
  
  server Connection type: play locally
  player computer connection type: WIFI ( I using Modem)
  [WorldFile Size] world.db: 164,137KB + world.fwl: 1KB
  
  BIOS: InsydeH2O Version 05.05.01F.50 (type: BIOS)
  Processor: Intel(R) Celeron(R) CPU N3060 @ 1.60GHz (2 CPUs), ~1.6GHz
  Memory: 4096MB RAM
  Available OS Memory: 3944MB RAM
  Page File: 2604MB used, 7227MB available

• 11 Apr, '21
  QuirkyStreet4288

  I managed to fix the ZRpc issue on my own, by changing the class m_timeout, from 30 seconds to 300 (in the file assembly_valheim.dll).
  
  Now the game works again.

• 11 Apr, '21
  Bauxer

  Have had the disconnect issue since the last patch, something changed in it that is causing it for everyone on a hosted box. Its not a local issue since everyone in the hosted environment gets disconnected at the same time. My PC specs are above and beyond the minimum requirements, also hard wired in so not a connection issue. If it were a connection issue then it would be very coincidental that every time everyone on the hosted environment gets disconnected at the same time that they have the same exact issue with different ISPs and connection types...Seen some indicating that its during world saving on server side and closing the sockets for everyone that is connected. Cant even play the game how its supposed to be played because I dont dare get in a boat and get disconnected and then it spawns me back in off the boat and I drown... Please fix so we can actually play for more than 10 min...

• 12 Apr, '21
  Smiffe Admin

  @QuirkyStreet4288
  How long does it take for your server to save when it saves?
  And what CPU, GPU, RAM do you have in it?
  Network type?

• 12 Apr, '21
  Smiffe Admin

  @Bauxer,
  
  We are looking into these issues all the time. Trying to find why it behaves like this for some players, but not the majority of players..
  Why some are very prone to these kinds of issues and how it happens. (looking at code while things save, network issues and so on)

• 12 Apr, '21
  Kosander

  For what it's worth; I had the Disconnected error if I tried to connect to a dedicated server. Private world was ok, and a friend could also join in my world.
  
  For some reason I had the power saving power plan turned on, switching it to balanced allowed me to access the game and also gave me a loads better fps

• 12 Apr, '21
  Zenon

  I've been pretty consistently getting the ZRpc error on my dedicated server over the past couple of weeks - every day I try to log in, it will happen at least once, often will happen 5+ times in a row. I'm happy to let the devs test anything on my server if it will help fix it - I've got ssh access, installed it via LinuxGSM (https://linuxgsm.com/lgsm/vhserver/) - For me right now the server is unplayable, so I would gladly take time to do whatever it takes to try and fix this. Please let me know!

• 13 Apr, '21
  Smiffe Admin

  @QuirkyStreet4288
  
  Well. we do recommend 8Gb ram and about 3Ghz processor as host for a dedicated server.
  Your wifi connection might also add to some slowdown issues incase it isn't the strongest connection (tho I assume you don't have a bunch of broken packages)
  
  When the world is small, 4Gb ram usually works just fine. But as more and more things are added, and the instances get higher. the data being sent back and forth between clients and server quickly fill up your RAM, which gives you the 1minute (and worse) save timer :(

• 15 Apr, '21
  Jonathan

  I had a related issue, after patch, after playing a session on a dedicated server with 1 friend, the game reloaded at the start of the previous session rather than at the end of it. We had to build the same house three times. Last time we played the house was actually there, so maybe (i hope) this is now fixed.
  Thanks for a great game (when it works )

• 15 Apr, '21
  MC

  Yet another ZRpc disconnect on my self-hosted server. It's completely unplayable at the moment, and has been for the last 9 days. I've tried every possible fix in this thread to no avail.
  3 players on server.
  
  Server Connection Type: 2 Local/1 Internet
  World File Size: 49,525KB
  
  My Rig (Host):
  CPU: i7-9700k
  GPU: RTX 2060
  RAM: 32GB (2x16)
  Space on hosted drive: 1.6TB available of 2TB
  Connection: ~1G, Wired; LAN to server
  
  Wife's Rig:
  CPU: i9-9900k
  GPU: RTX 2070 Super
  RAM: 32GB (2x16)
  Space on game file drive: 560GB available of 1TB
  Connection: ~1G, Wired; LAN to server
  
  Friend's Rig:
  CPU: Ryzen 9 3900X
  GPU: RTX 3090 ROG STRIX (Yes, I hate him)
  RAM: 32GB (2x16)
  Space on game file drive: 1.1TB available of 2TB
  Connection: ~400MB Down/~100MB Up, Wired

• 16 Apr, '21
  bodyXY

  @Smiffe
  
  Hey,
  
  since last night we have also the same problem with disconnects (ZRpc timeout). The Valheim-Server runs on a Root-Server with 8GB Ram (5.2 in use with running Server) and a 4x3,4gHz CPU hostet by Zap-Hosting an knowing company in the gaming scene.
  
  Please take a look into it and fix the problem. at the moment we cant play further more on the server.
  
  Best regards.

• 19 Apr, '21
  Leon Straathof

  @Smiffe We also tested the stability of the internet connection over prolonged period, on the client side we ended up with just 0,04% packet loss which is extreme low for a home internet connection. At the server side it was even better. I start to wonder when developing the server part did they ever test it with a traffic shaper?? Every dev who works on client server things should know they have to do that.

• 21 Apr, '21
  Spectre

  Updated a vanilla Linux server to 6508109 on 2021-04-19 to resolve incompatible version error after patch v0.150.3 was automatically applied to PC steam clients. However the server now crashes after unloading unused assets and setting up worker threads for Enlighten:
  
  ==============================
  Unloading 16 unused Assets to reduce memory usage. Loaded Objects now: 86187.
  Total: 129.934623 ms (FindLiveObjects: 11.929957 ms CreateObjectMapping: 17.931700 ms MarkObjects: 98.963225 ms DeleteObjects: 1.097972 ms)
  
  Setting up 1 worker threads for Enlighten.
  Thread -> id: 7f40ce66c700 -> priority: 1
  04/20/2021 17:26:37: Steam manager on destroy
  
  (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
  ==============================
  
  No mods/cheats have ever been used on the server, & data files were less than 80 game day cycles old.
  Deleted all game files & forced clean install via steamcmd; attempted to overwrite "./steamclient.so" with "./linux64/steamclient.so" to no avail.

• 24 Apr, '21
  Spectre

  Additional errors after complete uninstall & re-install with newly generated map/seed onLinux build 6508109:
  ==============================
  ...
  Setting up 1 worker threads for Enlighten.
  Thread -> id: 7f892266c700 -> priority: 1
  04/24/2021 12:30:49: Steam manager on destroy
  
  (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
  
  src/tier1/fileio.cpp (4913) : Assertion Failed: s_bExit
  src/tier1/fileio.cpp (4913) : Assertion Failed: s_bExit
  src/tier1/fileio.cpp (4915) : Assertion Failed: m_vecRegisteredWriters.Count() == 0
  src/tier1/fileio.cpp (4915) : Assertion Failed: m_vecRegisteredWriters.Count() == 0
  Bad thread localsrc/tier1/fileio.cpp (4975) : Assertion Failed: CFileWriterThread already exited
  src/tier1/fileio.cpp (4975) : Assertion Failed: CFileWriterThread already exited
  Bad thread localBad thread localsrc/tier1/fileio.cpp (4975) : Assertion Failed: CFileWriterThread already exited
  src/tier1/fileio.cpp (4975) : Assertion Failed: CFileWriterThread already exited
  $

• 25 Apr, '21
  HupfiDupfi

  G'day! First: Great job! I know, you have a lot of work, and you will improve the game in the future. But....You guys changed something with how connections work after 146.11, till then, my sisters and I could play in the same room: Host, Join, Perfect! So simple! No dedicated server needed and all that... since Version 147/148/150, we couldn't find each others hosted games, even if my monitoring software says, our connection is perfect. We loved the game... for now, we "depatched" it to version 146.11, now it works again. We will have to improve the game only using mods. Maybe there will be a connection option to choose from or something. I'm sure, you will find a solution. Keep the good work up! Thumbs up! :-)

• 27 Apr, '21
  BrianJensen

  To fix Incompatible version.
  
  You can either install SteamCMD OR Uninstall the server and reinstall it.
  
  Copy the bat file you use to launch the server somewhere safe. Uninstall server, Reinstall server, copy bat file back to location.
  
  Uninstalling the server does not remove save state data. It's safe to uninstall it.

• 13 May, '21
  The_fin

  Did you try to fix the dedicated server via steam? I did it with number 2 on this list:
  https://www.drivereasy.com/knowledge/solved-valheim-server-disconnected-error/#fix6
  
  But still we get almost everytime kicked of the server if it is saving the world.

• 15 May, '21
  MikeyM3thodic4l

  Having a weird issue here where the dedicated server ran fine without issues for a week or so then am now having "Got status changed msg k_ESteamNetworkingConnectionState_None" issues where everyone in the server lags out simultaneously. No hardware/network changes, have tried everything I can reset/reinstall/update/verfiy etc. Seems to just happen pretty consistently after an amount of time after we reset it and get back on it.
  
  Honestly just feel like I'm beating my head on the wall over this checking and trying everything at this point. I've seen it mentioned here in other posts with no real resolution it seems like as well.

• 31 May, '21
  JP McGlone

  I was having all of these issues over wi-fi. Since upgrading to having my local machine (running the dedicated server) and my wife's machine to being wired in, we've had no disconnects.
  
  I don't know why that would be, but it might be a fix for some of you, too.

• 31 May, '21
  thehemmo

  if you get
  - Bad thread localsrc/tier1/fileio.cpp (4975) : Assertion Failed: CFileWriterThread already exited
  there seems to be instance already running so it needs to be killed. at least that was my case

• 09 Jun, '21
  Gormigust

  Since the latest patch still mentions nothing of the problem, I will upvote this again. A friend of us (nearly) always cannot connect to the game server (both stand-alone dedicated server on a seperate PC and via friends-game option in game). Error messages is the dreaded "zrpc timeout". He might be lucky and get on after a lot of tries, and then rarely gets disconnected anymore - so this is only an issue on startup.
  We tried what we could (disabled virus protection, disabled firewall, repaired game, reinstalled game, killed all other processes (except discord), started server on different machines, server connected via Wifi and Ethernet, router priorisation of traffic) ... nothing helped. Please take a look at this issue, it takes the fun out of the game for all of us if one of us can't join.
  His processor is rather slow, but he has no problems playing the game - so my guess would be that the game does something time consuming in parallel to connecting, causing the server to timeout.

• 20 Jun, '21
  RSouls

  For those of you that say they have fixed it by modifying the .dll - Please share your findings on how to modify the file- in detail.

• 08 Nov, '21
  broussmr

  Has there been any progress on this issue. I am currently experiencing this exact bug and it does not seem that there are any fixes for it.

• 03 Jan
  Smiffe Admin

  This issue is usually due to mods on either side when you encounter it, and you have the same version number.