An active session might exist even after logging off the session when Symantec Endpoint Protection is installed on the Citrix XenApp Server.
Note: The issue was observed when a user starts a published application in the seamless mode. Additionally, multiple Symantec Endpoint Protection (SEP) system tray icons are displayed on Terminal Server Client for each connection made to a Citrix XenApp Server.

Caution! Refer to the Disclaimer at the end of this article before using Registry Editor.

To resolve this issue, configure the seamless global registry flags. These values affect all seamless connections to the server.

To configure a seamless global registry flag, edit any or both of the following registry keys in the Windows Registry Editor:

• Registry Key: HKEY_LOCAL_MACHINE/System/CurrentControlSet/Control/Citrix/wfshell/TWI

  • Value Name: SeamlessFlags
  • Value Type: REG_DWORD
  • Values: 0x20 (this is the flag for the DISABLE SYSTRAY AGENT)

• To avoid multiple instances of the SmcGui process the SEP tray icon, disable SmcGui by setting the following DWORD registry value on the Terminal Server:
  HKLM\SOFTWARE\Symantec\Symantec Endpoint Protection\SMC\LaunchSmcGui = 0

Problem Cause

The session was left in active state because the SmcGui.exe application did not terminate properly after the user logs off gracefully. This might be due to the Seamless Desktop Integration feature of Citrix, where resources running on a Terminal Server might be made to appear as if the resources are running on the client.

CTX101644 – Seamless Configuration Settings for more information about seamless configuration settings.
Symantec Web page for more information about multiple icons on the Terminal Server.