Deleting compatibility keys

Lately, I've been having issues with users turning on compatibility mode and breaking my application. I would like to remove the compatibility registry key through the installer rather then walk the user through doing so manually.

so far, it looks like the following:
DeleteRegKey HKCU "$INSTDIR\APP\APP.EXE"
But this does not delete the affected key. Am I doing something wrong? Is this even the proper key I should be deleting? Any help is appreciated.

You need to specify the registry path, the key you are after is somewhere under \Software\Microsoft, perhaps Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers?

Originally Posted by Anders View Post

You need to specify the registry path, the key you are after is somewhere under \Software\Microsoft, perhaps Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers?

I guess that would help huh? Guess I had a brain fart. So the line should look like this?

DeleteRegKey HKCU "Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers\$INSTDIR\APP\APP.EXE"

looks fine, but the registry key is still there, must be something else I'm missing or overlooking.

Looks like I was also using the wrong function, finally figured it out. The line that I tested and confirmed working is this:
DeleteRegValue HKCU "SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers" "$INSTDIR\APP\APP.EXE"