Tried both suggestions with and without running safe mode:
Open-the-Windows-Update_troubleshooter found issues running is safe mode, but 0x80070057 was not fixed, and "problems installing recent updates also not fixed. Also, "Corrupt files detected", but no indication what they were. Rebooted and re-ran,
again in safe mode, with the same result.
Moved on to .../kb/971058/en-us and ran Fix-It. "Troubleshooting cannot continue because an error has occurred." Ran the tool to diagnose the troubleshooting failure: "Troubleshooting couldn't identify the problem"
Yikes!
Problems started with "Scorpion Saver Services adware being detected and tried to get rid of it. I don't know if the problems with updates were occurring before or after that. During the process of trying to delete the adware malware, "Malwarebytes"
discovered 13 malware issues. I also installed Windows 7 SP1, but had to do it manually.
Still cannot update ...
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