angryciscoguy

Cisco removed the uninstaller from UCCX7 and states in their documentation that it is no longer supported. However, as the installer is based on microsoft’s msiexec.exe, we find that these options are still valid from the command line.

http://msdn.microsoft.com/en-us/library/aa367988(VS.85).aspx

Thus, “setup.exe /x” will allow you to bypass the restriction of the Cisco installer and allow successful (although unsupported) uninstallation.