Windows 10 Upgrade Failure Error cannot be removed from Windows Update screen.

So I've run into an issue with a perticular customer and their Windows Update. He rolled back from Windows 10 to Windows 7 and now Windows Update constantly shows a "Windows 10 upgrade failed" error. The error goes away if you open the update screen and then close and reopen it. However, that error returns on reboot. I've run update reset tools, CCleaner for the registry just in case, ATF cleaner and even the Windows Disk Cleanup. Any ideas on how to remove this error?
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Barnett ComputersIT Services CompanyAsked:
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David Johnson, CD, MVPOwnerCommented:
Try the GWX Control Panel to remove the downloaded pre-install files http://ultimateoutsider.com/downloads/
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Barnett ComputersIT Services CompanyAuthor Commented:
Unfortunately that's one of the main things we went through on the issue. I've been unable, as of yet, to remove the error. We eventually had to inform the customer that it would be a small nuisance but wouldn't really hinder his update experience. Any thoughts on a potential fix since?
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Barnett ComputersIT Services CompanyAuthor Commented:
No solution found on the issue, but after such time it seemed we had no consensus. Closing the topic for now until the problem comes up again.
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Windows 7

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