Stuck at 0%, looping on "Working on updates", or failing with an error code? Get it moving without breaking anything.
Moderate⏱ 20–60 minWindows
Windows updates can look frozen when they are simply slow. Large feature updates can sit at the same percentage for 30 minutes or more, particularly on older computers with hard drives rather than SSDs. Turning the computer off mid-install is the one thing that can genuinely cause damage, so patience comes first.
If an update truly has not moved for a couple of hours, or it fails and retries endlessly, there are safe, well-established ways to clear the update cache and try again.
Try these first — 30 seconds each
[ ]If the screen says "Working on updates, don't turn off your computer", wait at least an hour before doing anything — watch for disk activity lights.
[ ]Make sure the laptop is plugged into power.
[ ]Check you have at least 20 GB of free disk space; low space is a leading cause of failed updates.
The full fix
6 steps in the order that solves it fastest, plus platform notes, prevention, and when to call
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1
Restart properly and try again
If the update failed while Windows was running (not during the "don't turn off" screen), choose Start → Power → Restart — not Shut down, which on many computers does not fully reset Windows. Then go to Settings → Windows Update and click "Check for updates".
2
Run the Windows Update troubleshooter
Search Settings for "Troubleshoot", then open Other troubleshooters and run Windows Update. It resets several update components and fixes common permission and service problems.
3
Free up disk space
Open Settings → System → Storage and use Cleanup recommendations, or run Disk Cleanup and choose "Clean up system files". Removing temporary files and old update leftovers often frees many gigabytes.
4
Clear the update download cache
Open Command Prompt as administrator and run: "net stop wuauserv" and "net stop bits". Then open File Explorer, go to C:\Windows\SoftwareDistribution\Download, and delete its contents. Return to Command Prompt and run "net start wuauserv" and "net start bits". Windows will re-download fresh copies of the updates.
5
Repair system files
In an administrator Command Prompt, run "DISM /Online /Cleanup-Image /RestoreHealth", wait for it to finish, then run "sfc /scannow". These repair corrupted system files that can block updates. Restart and try the update again.
6
Install the update manually
Note the update's KB number from Windows Update history, search for it on the Microsoft Update Catalog website, download the version for your system, and run it. For large feature updates, Microsoft's Installation Assistant (on the Windows download page) is a reliable alternative.
Platform notes
Windows
If the computer will not boot after a failed update, Windows usually opens Automatic Repair. Choose Advanced options → Troubleshoot → Advanced options → Uninstall Updates to remove the latest quality or feature update.
Stop it happening again
Keep at least 20–30 GB of free space on the system drive.
Set Active Hours (Settings → Windows Update → Advanced options) so updates install when you are not working.
Let updates finish before closing a laptop lid or unplugging.
When to get professional help
If Windows will not start after a failed update and the repair options do not help, stop and get help from a technician or the computer maker — especially before resetting, which can remove apps and, if you choose the wrong option, files.
This is general troubleshooting information for home users. Menus and settings differ between
device models and software versions. Back up important data before making changes, and contact
the manufacturer or an authorised repair provider for hardware faults or anything under
warranty.
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