You must kickstart your PC to apply new updates.
If your machine didn’t automatically restart after the update, try rebooting manually.
Check your internet connection.

You must have a stable internet connection to download Windows updates.
Run Windows Updates again.
If there’s a chance something went wrong when downloading the updates.
Try running Windows Update again to fix the problem.
fire off the Windows Update troubleshooter.
Go toSettings>System>Troubleshoot>Other troubleshootersand selectRunnext toWindows Update.
The troubleshooter will detect and fix any issues it finds.
Free up hard drive space.
verify you have enough free space on your PC to load the most recent updates.
Remove any external drives.
Turn off your antivirus.
If you have antivirus software installed, it could be interfering with Windows updates.
Turn off your VPN.
If you’re running avirtual private internet (VPN), turn it off.
VPNs can sometimes confuse the Windows Update servers.
Run System File Checker.
Use thesfc /scannowcommand to check for system errors that could interfere with updates.
execute the chkdsk command.
execute the commandchkdsk/f C:to check your hard drive for errors and fix any issues it finds.
When you’re done, cycle your PC.
Run Disk Clean Up.
So, check your Downloads folder for anything you no longer need.
There is an automatic setting in Windows that allows Windows to update itself without any intervention from you.
In Windows 11, go to:controls>Windows Update>Advanced Options.