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Connect Client Install On Windows Terminal Server


If you are using a Windows Terminal Server and want the Connect Client installed, you need to enable "Turn Off Windows Installer RDS Compatibility" via Group Policy for that server. 

When installing the Connect Client without this, the installer shows an error.  

Failed Installation Message


Operating System Warning

This solution requires advanced knowledge of your computer's operating system. Contact your system administrator for assistance. Modifying your Windows Registry incorrectly can severely affect system operations. Mitel is not responsible for operation issues caused by incorrectly modifying your Windows Registry. Always create a backup of your data before proceeding with advanced solutions.



Disclaimer: Please contact Microsoft Support for any issues implementing the following.  

  1. Select Cancel on the error and close out of the Installer.
  2. Click Start button.
  3. In the Search box type gpedit.msc, and then press Enter.
  4. Select Computer Configuration
  5. Select Administrative Templates.
  6. Select Windows Components.
  7. Select Remote Desktop Services.
  8. Select Remote Desktop Session Host.
  9. Select Application Compatibility
  10. Double-click Turn Off Windows Installer RDS Compatibility, and set it to Enabled
  11. Rerun Connect Client Installer.
  12. Verify the client installs without error.

Additional Procedures

Another way to avoid this issue is to create and set the following dword value to 0:

NOTE: Always backup the registry before making any modifications!

Disclaimer: Please contact Microsoft Support for any issues implementing the following. 

HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\Terminal Services\TSAppSrv\TSMSI\Enable

During deployment with MDT 2012 or SCCM 2012 one way to do this is to add it in your task sequence:

User-added image

ShoreTel Dates

Created Date 2017-10-13 - Modified Date 2017-10-25

Article: 000014170