Over and over.
Error 0x80070020
kb4054517 gets to 48% in the restarts and setting up stages and then decides it has to
rewind everything. Occasionally Windows Update thinks it has installed. But it always
wants to reinstall and do a restart.
I've removed Norton Internet Security. That didn't help.
I've run the checker programs for windows update to see if it's working correctly.
I've tried installing manually after turning off the windows update service.
I've use scavenger programs if available to uninstall any remnants of malware bytes,
bit defender and spybotsd, in case one of those programs is blocking the completed
setting up windows process.