Removing a proxy agent can fail if Windows Installer Logging is enabled.


When you try to uninstall a proxy agent from the Windows Control Panel, the uninstall fails and you see the following error:

Error opening installation log file. Verify that the 
specified log file location exists and is writable


This can occur if Windows Installer Logging is enabled, but the Windows Installer engine cannot properly write the uninstallation log file. For more information, see the Microsoft Knowledge Base article at


  1. Restart your machine or restart explorer.exe from the Task Manager.
  2. Uninstall the agent.