Windows key updating tool
Windows Product Key Finder Pro instantly displays product keys and allows you to save or print them for safe keeping.
The support page covers Windows 7, Windows 8.1 and Windows 10 only.
The troubleshooter displays all repair options after a quick scan: As you can see, the tool checks for a couple of things and may fix most of them when you give the ok (or automatically if you have not changed the option under advanced).
(via Deskmodder)Windows Update troubleshooters may help repair update related issues but these tools have their limits as well.
While the new Windows 10 Windows Update troubleshooter checks for additional issues, it is far from complete and may still lead to you having to perform manual repairs or even a system restore.
Now You: What's your experience with these troubleshooters so far?