Hi, I'm Bernard, a fellow Windows user. I'm happy to help!
Do you see any error code? And may I know what particular KB is failing to update?
While waiting, I recommend recalibrating Windows Update components by following the steps below:
Open Terminal (Admin) or Windows PowerShell(Admin) (Press Windows key + X then click Terminal(Admin))
Copy each line of command, then press Enter (one line at a time)
net stop bits
net stop wuauserv
net stop appidsvc
net stop cryptsvc
Del "%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\*.*"
rmdir %systemroot%\SoftwareDistribution /S /Q
rmdir %systemroot%\system32\catroot2 /S /Q
regsvr32.exe /s atl.dll
regsvr32.exe /s urlmon.dll
regsvr32.exe /s mshtml.dll
netsh winsock reset
netsh winsock reset proxy
net start bits
net start wuauserv
net start appidsvc
net start cryptsvc
-Once done, restart the device and check.
Note: If the issue persists, a system repair on the affected device might be necessary. Please let me know the Windows version and edition you have.
To check:
Go to Settings > System > About
Under Windows specifications, please let me know the Windows version and edition you have.