Windows update troubleshooter not working

Follow these steps on Windows 11 when Windows Update fails and the troubleshooter cannot fix the problem:

1. Run the built-in Windows Update troubleshooter again
   1. Select Start > Settings > System > Troubleshoot > Other troubleshooters.
   2. Under Most frequent, select Windows Update > Run.
   3. Let it complete and apply any fixes it suggests.
   4. Restart the PC.
2. Try updating again
   1. Select Start > Settings > Windows Update.
   2. Select Check for updates and install all available updates.
3. If updates still fail, use the general Windows Update troubleshooting steps The common causes include incomplete downloads, corrupted system files, insufficient disk space, disabled update services, or other software blocking the update. Use the guidance in Troubleshoot problems updating Windows to:
   • Match any error code shown (for example 0x800705b4, 0x80240034, 0x800f0922, 0x80070002, 0x80070003, 0x80070422, 0x80070020) with its cause.
   • Follow the detailed steps for that specific code, such as:
     • Running the Windows Update troubleshooter from Settings > Update & Security > Troubleshoot > Additional troubleshooters (for entries documented there).
     • Checking the internet connection under Settings > Network & Internet.
     • Resetting Windows Update services by stopping the Windows Update service, clearing C:\Windows\SoftwareDistribution, and starting the service again.
     • Temporarily disabling antivirus or firewall software that might be blocking updates.
4. If the problem persists After repeating the troubleshooter and following the error‑code–specific steps in the Windows Update troubleshooting article, continue with the remaining guidance in that article (for example, additional repair or recovery options) until updates install successfully.

References:

• Windows Update Troubleshooter
• Troubleshoot problems updating Windows