Window 11 upgrade has failed error code 0x8007007f

I got it to work, but I don't know exactly what I did. Here are the steps I took:

1. Followed the instructions in this answer. No errors were found nor returned
2. Restarted the computer
3. Ran Windows Update and installed one update
4. Restarted
5. Ran Windows Update; no updates available
6. Ran Windows 11 installation application from this answer.
7. Success

My best guess is to keep running Windows Update until there are no more updates before attempting to upgrade to Windows 11. Good luck!