Ctxusbm.sys Error Code 38 on Windows Endpoint [ Audio & Video is broken ] when running Trellix
Article ID: CTX696128
Updated On:
Description
When both Trellix DLP and CWA try to gain access to the Audio and Video Drivers upon reboot, the drivers error out with an error ID 38.
- Which then causes audio/video to break on the endpoint -> and if this is broken, then will be broken on Citrix session as well.
Resolution
Please make sure that you are running CWA v2402 CU2 (or higher) for the Code Functionality [HDX-67276] is present so the registries will have effect.
Please create the following registries on the Endpoint:
Under the following locations:
- Registry path: HKLM\SOFTWARE\WOW6432Node\Citrix\ICA Client\GenericUSB
- Registry path: HKLM\SOFTWARE\Citrix\ICA Client\GenericUSB
- Registry path: HKCU\SOFTWARE\Citrix\ICA Client\GenericUSB
Both with:
- DWORD Registry Name: CompareFilterDriverName
- Registry Value = 1
** These registry values require a reboot to take effect **
Issue/Introduction
Ctxusbm.sys Error Code 38 occurs on Citrix Workspace App for Windows.
Additional Information
