To resolve the issue, please follow the suggested methods below:
Method 1. Run the scan again.
If the scan freezes and doesn't complete when Windows Update is scanning for updates, try to run the scan again.
Method 2. Run the Windows Update Troubleshooter.
You can download the troubleshooter from this link: Windows Update Troubleshooter.
Method 3. Perform a System Restore.
- Turn off your computer manually by pressing the power button.
- Start your computer by pressing the power button.
- At the logon screen, tap or click the power icon in the lower-right corner.
- Press the Shift key, and then tap or click Restart.
- On the Choose an option page, tap or click Troubleshoot, and then tap or click Advanced options.
- Tap or click System Restore. The computer will restart to System Restore. Select your account to continue.
- On the System Restore page, tap or click Next.
- When the restoration process is complete, tap or click Restart.
These steps are also available on this link: Windows Update freezes when you install updates in Windows 8, Windows 7, or Windows Vista.
Keep us posted.