Windows 10: “We couldn’t complete the updates. Undoing changes." and cannot enable Windows Update on...

After updating my Lenovo ideapad 320 Windows 10, I got for the first time the "we couldn't complete the updates" message, and cannot get out of that screen. With that said, I've tried almost every solution I've found online like troubleshooting but none of them work, and the main issue seems to be that I cannot access Windows Update while in Safe Mode. I've deleted all the files on the SoftwareDistribution Folder, I've tried manually enabling the software via CommandPrompt and services.msc, but nothing, I always get the message "This service cannot be started in Safe Mode".

The only option I haven't tried yet is "Reset Your PC", which I don't really understand what it really does, and if I have to do anything in order to save as much as possible, since I don't want to lose any files, and losing my apps and configurations is not terrible but it sounds like a pain to get all of them back.


If there is a solution to any of these problems, I'll be more than thankful.

:)

 

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.

 

We couldn't complete the updated, undoing changes...

Hi,



I suggest you to run the Windows Update troubleshooter and check if it helps.

Windows 10 has a built-in troubleshooter to check and fix issues with Update. I would suggest you to run this troubleshooter to check if the issue is with your Windows update.

Refer these steps:

• 
  Press Windows key +X, select
  Control panel.
  
• 
  Change the view by option on the
  top right to Large icons.
  
• 
  Click on troubleshooting and click on the
  view all option on the left panel.
  
• 
  Run the Windows Update troubleshooter.
  

Keep us posted on this issue so that we can assist you better.

 

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

On a regular Windows Update routine I'm getting the following message:

The computer restarts for several more times repeating the same process, then, after system is on, checking the updates history reveals this:

Update

Checking the event viewer, I see this error 4 times: