Just a note for anyone who (like me) has wanted to try the Windows Update Troubleshooter from the Microsoft website.

There seems to be an error on this page, as at time of writing (30 September 2017).

There are two links, supposedly one for Windows 10 , the other for Windows 7 and 8.

However both links point to the same URL, and if you use it within Windows 10, it complains that Windows 10 itself has a newer version (even if , as seems likely given you're using this tool , Windows 10 hasn't been updated lately.)

Using this page seems to give the correct links :

The Windows 7/8 version seems to be at: https://aka.ms/diag_wu
The Windows 10 version seems to be at: https://aka.ms/wudiag