When to use CopyHKCUSettingsFromOtherUsers shim?

The CopyHKCUSettingsFromOtherUsers compatibility fix should be considered as a possible resolution if you are using an elevated application that is looking at the HKEY_CURRENT_USER registry keys and is running on a different user account than the original account used to install the program. You can investigate the registry-related issues by using registry-monitoring tools such as the Process Monitor. If the problem seems to be fixed by inserting a copy of the affected registry keys into the current user account, then this compatibility fix should also fix the problem.