MSIExec Uninstall GUID

You can use the registry to find the GUID of a piece of software for use with uninstalling with MSIExec.

In Regedit go to:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\

Note: On a 64-bit computer you will need to check both the key above and the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall

Find the program you are looking for and look at the uninstall string