Symantec Endpoint Protection (SEP) 12.1 RU1 conflicts with Citrix Profile Management 4.x. The conflict causes a number of applications such as Microsoft Power Point, Microsoft Word and Microsoft Excel to not show up in the Windows taskbar once they are minimized. In certain cases, explorer.exe (My Computer) may stop responding.

Note: When the Citrix Profile Management 4.x service is disabled, the issue is resolved.

The latest available BASH driver has resolved this reported conflict.  
Run LiveUpdate on the SEP client to download the latest version of this component.

As a workaround, the BASH (Behavior Analysis and System Heuristics) driver can be disabled through a command prompt (with local administrator privileges).
Complete the following steps to disable the BASH driver:

1. Run the following command:

   • 32-bit Windows: "sc config bhdrvx86 start= disabled" (without the quotes)

   • 64-bit Windows: "sc config bhdrvx64 start= disabled" (without the quotes) 

2. Restart the system once you have successfully completed the command.

Note: To re-enable BASH, repeat the same command used to disable it, however replace "disabled" with "system". The computer must be restarted for the change to take effect.

To confirm if BASH is running, use either sc query bhdrvx86 or sc query bhdrvx64.

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Problem Cause

The issue persists even after disabling various SEP 12.1 components such as Insight, AutoProtect or Application and Device Control. Removing Proactive Threat Protection does not resolve the issue.

The BASH driver remains functional even after removing Proactive Threat Protection. BASH provides the underlying technology for a number of SEP features, and is not limited to Proactive Threat Protection.

BASH has a conflict with Citrix Profile Management or with one of its filter drivers.

This article provides resolution when Microsoft Power Point, Word and Excel do not show up in the Windows taskbar once they are minimized and in certain cases explorer.exe (My Computer) stops responding.

Symantec Support - Symantec Endpoint Protection (SEP) 12.1 RU1 has a conflict with Citrix Profile Management