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Summary
Windows Updates are crucial for security, but they sometimes get stuck or fail to install. This article guides you through the built-in troubleshooting steps to resolve update errors.
Before You Start
- Ensure you have at least 10GB of free disk space. If you are short of that, see How to Free Up Disk Space in Windows 11.
- Disconnect non-essential peripherals (USB drives, printers).
Instructions
1. Run the Windows Update Troubleshooter
Windows has an automated tool to fix update services.
- Go to Settings > System > Troubleshoot.
- Click Other troubleshooters.
- Click Run next to Windows Update.
- Follow the on-screen prompts and apply any fixes.
- Restart your computer.
2. Reset Update Components (Command Prompt)
If the troubleshooter fails, manually clearing the update cache often works.
- Press the Start key, type
cmd. - Right-click Command Prompt and select Run as administrator.
- Type the following commands, pressing Enter after each:powershell
net stop wuauserv net stop bits ren C:\Windows\SoftwareDistribution SoftwareDistribution.old net start wuauserv net start bits - Close the Command Prompt and try updating again.
Troubleshooting
DANGER
If the same update fails repeatedly, pause updates (Settings > Windows Update > Pause for 1 week) to give Microsoft time to publish a fixed version, then unpause and try again.
| Symptom / Error | Potential Cause | Solution |
|---|---|---|
| Error 0x80070002 | Corrupted Files | Run Method 2 (Reset Components). |
| Update Stuck at x% | Depends on install phase | See Stuck Mid-Install: Is It Safe to Turn It Off? below. |
Stuck Mid-Install: Is It Safe to Turn It Off?
Whether cutting power is harmless or a last resort depends on which phase the update is in. Find the screen you are looking at:
| What your screen shows | Safe to turn off? | What to do |
|---|---|---|
| Downloading or installing inside Settings > Windows Update — desktop still usable | Yes | Restarting now is safe. Nothing critical has been replaced yet, and the download or install resumes from where it stopped the next time you open Windows Update. |
Full-screen Working on updates with a percentage and Don't turn off your computer | Not yet | This is the phase that replaces system files. A slow-moving percentage is still progress — if the number has changed within the past hour, let it run. Only a percentage frozen for 2+ hours counts as stuck (next row). If you have a 9am call, take it on your phone or another device; the PC finishes without you. |
| The same percentage frozen for 2+ hours, no disk activity light | Last resort | Hold the power button for about 10 seconds until the PC switches off, wait a few seconds, and power it back on. Windows detects the interrupted install and rolls it back automatically — expect We couldn't complete the updates. Undoing changes. on boot. Let the rollback run to the desktop (it can take as long as the install did); your files and apps are untouched, and you land back on the previous version. Then run the Windows Update Troubleshooter (Method 1). |
| Install, restart, error, install again — a loop | No need | Windows is already rolling back each failed attempt on its own. Let the current cycle land back at the desktop, then pause updates (Settings > Windows Update > Pause for 1 week) and work through Methods 1 and 2 before unpausing. |