Game crashing at startup. Are you using Citrix?

[1stGenGamer]

Game crashing at startup. Are you using Citrix?

I hope to save people time dealing with this problem. Just to be clear, this is not a Game Developer issue rather an issue found with the Unity game engine. It is unrealistic to think most players would make the connection that "only games built on the Unity game engine" are crashing and then search for for that. It took me over a day to realize it. Once I changed my search, I quickly found the solution to my games crashing at startup.

The problem lies with the Citrix Workspace Hub. Spacificaly, the Citrix Casting that installs a display adapter called "Citrix Indirect Display Adapter." The full read is here:

https://forum.unity.com/threads/unity-2018-2-7f1-windows-standalone-crash-on-first-run-unityplayer-dll-caused-an-access-violation.556585/

Fix 1)

Początkowo opublikowane przez markholley:

You can also open up the Device Manager and disable the "Citrix Virtual Bus Enumerator". You might have to re-enable it to use Citrix.

Fix 2)

The fix can be found in the thread but to save time, I'll quote TheDakk:

Came across this issue today when installing Legends of Aria. This issue is due to Citrix Casting in the new Workspace Hub feature added to the Citrix Workspace recently.

Uninstall Citrix Workspace and Re-Install it from Command Prompt using the following command:

CitrixWorkspaceApp.exe ADDLOCAL=ReceiverInside,ICA_Client,AM,SELFSERVICE,DesktopViewer,Flash,Vd3d,WebHelper,BrowserEngine

(there's a space after the executable name like a typical parameter)

This will install Citrix Workspace without Workspace Hub which has the Citrix Casting driver causing the crashing.

I have 10+ years Citrix Engineering experience. Happy Gaming!

The key here is to uninstall and reinstall Citrix from the command prompt. This immediately fixed all my issues with Unity games not running. Archiving this fix here.

[B͜i͠ba͑b̈́e͔a̽tm͐a̚n͕n͝]

Thank You so much.
Couldn't start Cities: Skylines. Fix 1 Did it for me!
This is an awful bug....

[JackyBryant]

Just want to say thanks as well for this - solved my issue (with Super Lucky's Tale)

[VietVet]

Yep - I figured it out - disabled Ctrix vidio

[johanlijffijt]

Fix 2 worked for me. Thanks !!

[VietVet]

Fixed - got it - thanks!

[Druid]

Just installed Dungeons 3 and had the crash on start up issue too.
Read through the thread above, went into device manager and uninstalled a Citrix secondary display under Display Adapters. I didn't have to uninstall/reinstall Citrix.
I'm still able to access my remote site that requires Citrix and Dungeons 3 is working now.

https://forum.unity.com/threads/unity-2018-2-7f1-windows-standalone-crash-on-first-run-unityplayer-dll-caused-an-access-violation.556585/

[Millenial]

Thank u very much for this info. Despite the fact that this topic talks about problems in unity games arising from citrix workspace, BUT THIS IS NOT ONLY UNITY BASED GAMES PROBLEM!.
I faced a related problem in apex legends and grounded too. These games was lagging, i had <12 fps in both games. And the cause was citrix. After following your steps i managed to fix it.

[jhntmarried]

Początkowo opublikowane przez markholley:

You can also open up the Device Manager and disable the "Citrix Virtual Bus Enumerator". You might have to re-enable it to use Citrix.

ok how?

[Jayaos]

Device Manager > System Devices > right click Citrix Virtual Bus Enumerator and choose "Disable"

[VietVet]

Already fixed - thanks!