Hi Subhajit Nandi,
I am Anthony, <removed> a fellow Windows 10 user like you. I'll be glad to help you today.
I would recommend you to try each methods provided on the articles below to fix this issue:
1. Disable your Antivirus Program temporarily
2. Run System File Checker
- Open Command Prompt with Administrator Privileges.
- Run the command "*sfc /scannow" (*without quotes)
- Restart your system after the scan completes.
3. Reset Windows Update Components & folders
The following suggestions will help you if you to reset the Windows Update components to default:
- First, reset Windows Update Agent
- Then remove the files inside the SoftwareDistribution folder
- And at last, reset Catroot2 folder.
Hope it helps.