how to Uninstall Agent via Command line without MSI file (4269674)

If you used a script to automatically push the CA agent to machines when they are added to OUs in AD, sometimes when the Server is moved the Agent needs to be uninstalled automatically, However if the MSI file no longer exists on the server the uninstall Fails

1. Open regedit and navigate to the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
2. Find the value that has the display name Value as "Quest ChangeAuditor Agent x (x64)"
3. Note the Value specified in the UninstallString within the { } brackets
4. Run the following from an elevated command prompt:
   MsiExec.exe /x {GUIDFromStep3}

This completely removes the Change Auditor Agent, with the exception of the Files & Folders where the agent was installed.