Please try these options one by one and check after each option.
- Run Built-in & Guided Walk through Windows Update troubleshooter
Built-in : Windows Key+X > Click Settings > Click Update & security > Click Troubleshoot > Click Windows Update > Click Run the Troubleshooter
Guided Walk though - https://support.microsoft.com/en-us/help/10164/...
- Run SFC Scan & DISM