I suppose I could handle this with a bookmark, but this is the link that I can never find:
Now it will be available when I am on someone else's computer.
I have found that the odds of a successful update improve when I run the Windows Update Troubleshooter first. You can find the update troubleshooter at this site:
Download and run the troubleshooter against Windows Update. Allow the troubleshooter to fix any problems. If there are problems that aren't fixed, run the troubleshooter a 2nd time.