Hi Pulkit,
I'm Paul and I'm here to help you with your concern.
There must be something preventing the update to be finished.
Please try the following.
- Run Troubleshooter
Open Settings => System => Troubleshoot => Other troubleshooters => Windows Update => Run.
- Use Command Prompt commands.
=> Open Command prompt as Administrator.
=> Type/copy the commands below , enter 1 by 1.
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
- Use System File Checker to check and fix corrupted system files which may be the cause of the issue. Please refer to the link.
https://support.microsoft.com/en-us/help/402652...
- Uninstall any 3rd-party Antivirus.
- Update all device drivers and BIOS.
- Disconnect the USB devices except for the mouse and keyboard.
- Perform Clean Boot. Refer to this link.
https://support.microsoft.com/en-us/help/929135...
After doing the things listed above, try to reinstall the update.
I hope this helps. Feel free to ask back any questions and keep me posted.