Why the update stuck at 100% on my computer?

1. Immediate fixes
Force the update service to restart
powershell
# Run with administrator privileges:
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
 2. Clear the update cache
powershell
dism /online /cleanup-image /restorehealth
sfc /scannow
3. Manually reset the update component
 Execute the command step by step
powershell
# Reset Windows Update components
net stop wuauserv
net stop bits
net stop appidsvc
net stop cryptsvc
del “%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\*. *” /f /s /q
rmdir “%systemroot%\SoftwareDistribution” /s /q
regsvr32.exe /s atl.dll
regsvr32.exe /s urlmon.dll
regsvr32.exe /s mshtml.dll
net start bits
net start wuauserv
net start appidsvc
net start cryptsvc
4... Checking the update history
powershell
Get-WindowsUpdateLog -EtxPath “C:\Windows\Logs\WindowsUpdate\*.etl” | Out-File “C:\update_errors.txt”
Open the generated update_errors.txt and look for 0x8024 or 0x8007 error code.
5. Ultimate Solution
 Install the update offline
Access the Microsoft Update Catalog
Search for the stuck update number (e.g. KB5037000)
Download the corresponding version → Install manually
6. Create a new user profile
powershell
net user TempAdmin “P@ssw0rd” /add
net localgroup administrators TempAdmin /add
Retry the update by logging in with the new account