


'We couldn't complete the updates, Undoing changes' Windows error
Jun 30, 2025 pm 05:09 PMWhen encountering the Windows update prompt "We couldn't complete the updates, Undoing changes", you should first check whether the disk space is sufficient. 1. Make sure that the C disk has at least 15~20GB of free space. You can run the "Disk Cleanup" tool or enter the command %temp% to clean up temporary folders. If you use a mechanical hard disk, you can also perform disk defragmentation to optimize the update process.
When encountering the problem of "We couldn't complete the updates, Undoing changes" in Windows update prompt, many people's first reaction is to try restarting several times. But if you have tried restarting many times but still haven't solved it, then you have to move it to the point.

This problem usually occurs during system updates, such as file corruption, driver conflicts or insufficient disk space. The system will automatically roll back the changes, but sometimes it will not come out if it is stuck in this interface. Below are some practical troubleshooting and repair methods.

1. Check whether the disk space is sufficient
Windows updates require a certain temporary space to decompress and install files. If the C drive is almost full, the update will fail.
- Ensure that the C drive has at least 15~20GB of available space
- You can run the Disk Cleanup tool to delete temporary files and system update caches
- Or use the command:
%temp%
to clean the temporary folder
If you are using an old mechanical hard drive, you can also consider running disk defragmentation (for NTFS format only).

2. Try to manually reset the Windows Update Component
In many cases, if something goes wrong with Windows Update Service or related components, this error will occur repeatedly.
You can reset these components by following the steps:
- Open a command prompt (administrator permissions)
- Enter the following command to execute one by one:
net stop wuauserv net stop cryptSvc net stop bits net stop msserver
Then delete the two key cache directories:
ren C:We couldnt complete the updates, Undoing changes Windows errorWindowsWe couldnt complete the updates, Undoing changes Windows errorSoftwareDistribution SoftwareDistribution.old ren C:We couldnt complete the updates, Undoing changes Windows errorWindowsWe couldnt complete the updates, Undoing changes Windows errorSystem32We couldnt complete the updates, Undoing changes Windows errorcatroot2 catroot2.old
Finally start the service:
net start wuauserv net start cryptSvc net start bits net start msserver
After you finish, try to update again and often you can continue normally.
3. Check for conflicting third-party software or drivers
Some antivirus software, firewalls or older drivers will interfere with the system update process in the background.
- Temporarily close third-party antivirus software (such as Kaspersky, Bitdefender)
- Go back to safe mode and try to update, which can eliminate the impact of most third-party programs
- If you have just installed a new hardware driver recently, you can try uninstalling it and using the driver that comes with Microsoft.
Especially graphics card drivers are often one of the culprits. Drivers from NVIDIA, AMD and Intel can all cause compatibility issues.
4. Run the built-in troubleshooter and system file checker
Windows comes with some repair tools, don't underestimate their functions.
- Open Settings → System → Troubleshooting → Windows Update → Run Troubleshooting
- Run the system file inspector at the same time:
sfc /scannow
If the sfc prompt cannot be repaired, you can try a deep scan:
DISM /Online /Cleanup-Image /RestoreHealth
This command will download a clean system image from the Microsoft server to repair local system files.
Basically these are the methods. When encountering this kind of update stuck, don't rush to restart countless times. First check if it is a problem with disk space, service components or drivers. Follow the above method to check step by step, and it can be done most of the time.
The above is the detailed content of 'We couldn't complete the updates, Undoing changes' Windows error. For more information, please follow other related articles on the PHP Chinese website!

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