Upgrade fails

[ScottyS]

My upgrade has failed many times, I get error code 80070003.
MS leads me to run WindowsUpdateDiagnostic which has found and fixed problems, but it still fails.

I tried to Refresh, but Windows tells me necessary files are not present.
I'd prefer not to do a full Reinstall.
Any ideas?

 

[leeshor]

You could try a refresh or find a Microsoft Store as they are committed to helping with upgrade issues hands-on.

 

[ScottyS]

You could try a refresh or find a Microsoft Store as they are committed to helping with upgrade issues hands-on.

It wouldn't do a refresh, said files missing. MS Store is a good idea, I am near one and bought it there.
Thanks.

 

[GreyFox7]

If you've removed the Recovery Partition or it's damaged you'd have to Reset/Refresh from a Recovery USB.

 

[ScottyS]

If you've removed the Recovery Partition or it's damaged you'd have to Reset/Refresh from a Recovery USB.

Yeah, don't know why. Disk Management showed several Recovery partitions and OEM partition.
In any event, I did a full Restore from a USB Win8.1 Recovery drive I had made to Windows 8.1, let it do 131 updates, then upgraded to Windows 10.

Don't know if you want to mark this as "solved", unless a full restore is considered solving a Windows problem.