Where are all possible locations of UninstallString registry entries?

Question

I'm writing a Wix-based installer that needs to upgrade from older, non-msi-based installations. I'm finding instances of previously installed components by searching directly in the Registry.

To find the uninstaller for a component, I look in

 HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\MyProgram

And get the UninstallString value. This is fine, but I realised that for a 32 bit install on a 64 bit machine, the entry is actually at

HKLM\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\MyProgram

Is there anywhere else I ought to be looking?

Answer 1

There's a third entry:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall

Answer 2

I've checked this, and these are the only two locations. The second is used to store 32-bit programs on a 64-bit version of Windows. There are no other cases that need checking.