Windows 10: Error: We couldn't complete the feature, Undoing changes, when trying to enable Windows...

Hi,

I've tried to enable WSL from the control panel and from PowerShell, but when I restart it says :"We couldn't complete the feature, Undoing changes".

I have a 64-bit operating system and my windows 10 is updated. I've tried to switch in the "developer mode" but it didn't solve the problem.



***Original title: Issue Enabling Windows Subsystem for Linux***

:)

 

Windows can't complete the update and then it undoes all the changes

I am trying to update my windows to 1809, to use the ray tracing features on my RTX 2070. I am currently on version 1803. When I try to update using the windows 10 update assistant, it goes through all the steps but once it restarts to update I start to
have problems. It gets to 16% complete and then starts undoing changes. How can I fix this?

 

Windows 10 will not activate Error code 0x803F7001

thanks
I activated my Windows 10 from product key Windows 7

 

Windows 10: "We couldn't complete the updates, undoing changes"

I've got the same issue and following on @Arthur's suggestion, I had a look at my user SIDs in the registry under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList and some of them belonged to users that no longer existed in the system (I had previously removed them).

I've removed the dummy entries (luckily there were only a couple) and the update worked.

PLEASE save yourself some trouble and backup the registry before trying that.