Try these steps in order:
- Run the Windows Update troubleshooter.
- Select Start > Settings > System > Troubleshoot > Other troubleshooters.
- Find Windows Update and select Run.
- Follow the on-screen steps.
- Restart the PC, then try Windows Update again.
- Go to Start > Power > Restart.
- Then open Start > Settings > Windows Update > Check for updates.
- Check the internet connection.
- Open Start > Settings > Network & Internet > Wi‑Fi.
- Make sure the device is connected.
- Check free disk space.
- Windows needs at least 16 GB free for a 32-bit OS or 20 GB for a 64-bit OS to upgrade.
- If storage is low, free up space and try again.
- Repair Windows system files.
- In the taskbar search box, type command prompt.
- Select Run as administrator.
- Run:
DISM.exe /Online /Cleanup-image /Restorehealth - Wait for the message that the operation completed successfully.
- Then run:
sfc /scannow - Wait until the scan reaches 100%, close Command Prompt, and try Windows Update again.
- If the update still fails, do a clean restart of Windows to reduce software conflicts, then try the update again.
- If third-party hardware was added recently, update those drivers from the hardware manufacturer, then check for updates again.
- If nothing works, a clean installation of Windows 11 is available from the software download page. This is a major step, so back up personal files first.