Windows 10 couldn't be installed

I have a client who is getting the following error in Windows Update:
   Windows 10 couldn't be installed
   Failed: 1 update
   Error(s) found:
   80004004-40019 Windows Update encountered an unknown error.

My client claims they never agreed to install Windows 10 (and I believe them).

OS is Windows 7 Pro 64-bit.

I have run Never10 and sfc /scannow.

If I reboot the PC and go into Windows Update, the error message is still there.

My client does not want Windows 10, they just want to get rid of this update message.
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akbAsked:
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tailoreddigitalCommented:
If you run the GWX Control Panel, It has options for disabling Windows 10 upgrade and easy buttons to clear out any downloaded Windows 10 upgrade files.

The portable version will serve your needs,

http://ultimateoutsider.com/downloads/
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JohnBusiness Consultant (Owner)Commented:
GWX Control Panel works very well long term on several Windows 7 systems I have here including one virtual machine that I want to be Windows 7 forever.
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rindiCommented:
In control panel, programs and features, updates uninstall updates that could have caused this. After that run windows updates again.
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akbAuthor Commented:
Thanks for the replies. I will try GWX.
Rindi - can you tell me which updates they would be please?
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akbAuthor Commented:
GWX did not help. Still getting the same error. :(
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rindiCommented:
The last updates before this started. Or use a system restore point to return to a point before this happened.
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akbAuthor Commented:
I am told this started happening several months ago. Too far back to pin point the update or do a system restore.
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rindiCommented:
Stop the Windowsupdate service, then delete the contents of C:\Windows\SoftwareDistribution\Downloads and C:\Windows\SoftwareDistribution\DataStore

Then restart the service or reboot and try Windows Updates again.
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akbAuthor Commented:
I'm pretty sure that's what GWX did but I will try it. Thanks.
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JohnBusiness Consultant (Owner)Commented:
GWX did not help ... I am told this started happening several months ago.

There may have been some other damage done with the aborted Windows 10 install.

At this point, you may need to consider reinstalling  Windows 7 (back up first)
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akbAuthor Commented:
Issue has not been resolved. I cannot reinstall windows and I can't roll back the updates. I am still trying to find a solution..
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JohnBusiness Consultant (Owner)Commented:
You can always start fresh and reinstall windows (as we suggested). There is no other magic bullet, so what might you be hoping for.
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akbAuthor Commented:
Even though this didn't solve my specific problem, it was the most helpful comment.
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akbAuthor Commented:
John, reinstalling windows is not a viable option. This will cost my customer way too much money to fix a problem Microsoft has caused. I was hoping for a solution to the problem. Reinstalling the OS will fix any problem. That is not a realistic solution.
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JohnBusiness Consultant (Owner)Commented:
So then you should have deleted the question because the selected answer did not appear to fit the situation either
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akbAuthor Commented:
No, the answer I gave the points to was the most helpful and may be of help to others with similar problems.
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akbAuthor Commented:
Y Brown sent me the following message:

"Hi. I had the same issue as your client for one of my clients. Windows Update Error 80004004-40019 after aborting a Windows 10 installation. The solution is to run the following in CMD: "reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\OSUpgrade\Rollback /f"

Reboot and check for updates. It may error for 2-3 times, but check once more and you should be golden. No more Windows 10 failed error in Windows Update."

I haven't tried it but it may be of help to others with the same problem.
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