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Crashing / Freezing mainly in Multiplayer (Vanilla) at random times
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Randomly during multiplayer the game will freeze, it could be within 5 seconds, 20 minutes or an hour. So I uninstalled Arma 3 all together, removing all mods, etc. Did fresh install which allowed me to play for about 30 mins before freeze. I think the longest I have ever played is around 1 hour before freezing.

Windows shows error "Arma 3 has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available."

This also happens in single player but only very rarely.


Legacy ID
Game Freezes
Steps To Reproduce

Join into an awesome game of Arma 3 in multiplayer.
Get your gear.
Jump in helicopter.
Get out of helicopter and enter the battlefield.

At any point during the above the game will freeze :-(

Additional Information

1Things I have checked which didn't help / show signs of issues;
CPU & GPU temps.
Memory, CPU, Networking, Disk in Resource Monitor prior to loading Arma and directly after freeze with no obvious issues.
Clean reinstall with no mods.
Lowest graphic settings.
Closing all background programs.
Running as Admin.
Reducing Win7 Aero Visual Effects (note sometimes windows will ask "Do you want to change the color scheme to improve performance?" so by default I remove the color scheme when Arma 3 runs.)

My PC Spes;
GeForce GTX 650
Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
8.00 GB RAM (7.95 GB usable)
1920 x 1080, 60Hz
Windows 7 Home Premium 64bit

Dump Files & DxDiag!715&authkey=!AC1mdogDZOfAX4Q&ithint=folder%2crar

Event Timeline

DeadlySilent1 edited Additional Information. (Show Details)
DeadlySilent1 set Category to Game Freezes.
DeadlySilent1 set Reproducibility to Random.
DeadlySilent1 set Severity to None.
DeadlySilent1 set Resolution to Fixed.
DeadlySilent1 set Legacy ID to 25988764.May 7 2016, 8:17 PM

My PC Spes;
GeForce GTX 650
Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
8.00 GB RAM (7.95 GB usable)
1920 x 180, 60Hz
Windows 7 Home Premium 64bit

Your screen might be the problem 1920 x 180, 60Hz ;)

That was an easy fix, now says 1080... game still freezes but!!

thank you for reporting the problem. I have examined your crash files. Could you please remove all startup parameters and verify your game data?

After that, please create a new bunch of crashdumps and attach them again, thank you. This will ease the investigation. Also, one of the crashfiles suggests that the crash might be connected to your Steam Client. Please, ensure that you are running the latest version and consider running it as an Administrator from now on. I'll be waiting for the new crashdumps without start up parameters and custom allocators, thank you very much.

Cenwulf added a subscriber: Cenwulf.May 7 2016, 8:17 PM

Is it always on the same server? I had a similar problem caused by a corrupted mission file for a server I regularly played on. I would be able to play for a random length of time. Deleting the mission file from the mpmissions cache in the arma 3 apps data folder solved it for me. It would also make sense that the issue persisted after a full reinstall as the apps data folder isn't necessarily deleted even after a uninstalling the game.

Hi Iceman, thank you for taking the time to investigate my issue. I feel a hint of irony that Iceman will help me with my game Freezing!! Cenwulf, different servers in my tests below and each time I had to download the mission files from the server anyway. Do you think I should try removing all my AppData for Arma 3??

So this is what I have tried this evening.

  1. Ran Steam as Admin
  2. Verify integrity of game cache (all files successfully validated)
  3. Checked Set Launch Options (all clear)
  4. Ran Arma3 (note this is done through Steam not using the Open Launcher Option or Play withSix)
  5. Disabled all Mods
  6. Restarted Arma 3
  7. Joined game with 53ms ping with around 12 of x players
  8. Spent 10-20 mins playing until FREEZE (Crash dumps 19th @ 0701 PM)

I wasn't sure if maybe having Mods already enabled made a difference so I tried again, meanwhile Steam Update started and completed.

  1. Ran Steam as Admin
  2. Verify integrity of game cache (all files successfully validated)
  3. Ran Arma3
  4. Join game with 77ms ping 0/39 players (me against the world)
  5. Spent a nice amount of time in an attack heli raining down terror on Camp Rogain (not sure if I killed anyone but the buildings felt it!)
  6. Landed a few clicks SW then proceeded on foot until I approached the combat zone
  7. Caught my breath from running so far and FREEZE! (Crash dumps 19th @ 0804 PM)

I also included a .rpt from 19th @ 0646 PM, not sure why that .rpt is there but it might have some significance.

Would it help if I installed Arma 3 standalone and not through Steam Client? If so am I able to do this without purchasing a new copy?

Crash Dumps here!715&authkey=!AC1mdogDZOfAX4Q&ithint=folder%2crar in "Arma 3 Crashes 19.02.2015.rar"

We applied fixes to get rid of the issue, could you please try it when the new update is out? It should be in a week and a bit.

I cannot wait to test it, I will be thoroughly impressed by your companies speedy resolution if all goes well. Thank you.

Any chance you could elaborate on the fix? I'm a systems analyst and am intrigued by the cause of my issue. Thanks again Iceman.

The problem was caused by the recently updated PhysX libraries in the last update. I cannot be more specific, sorry.

No, if you're still freezing after downloading a fresh copy of a mission file then it's not the same issue I was experiencing. I wouldn't recommend deleting you arma 3 app data folder.