How to resolve error code 0x8024401c: Windows Update encountered an unknown error in Windows Server 2019

There are multiple approaches to resolve error code 0x8024401c in Windows Server 2019:

1. Verify your internet connection: Ensure your server has an active internet connection without any issues.
2. Restart the Windows Update service: Open the Services app, find the Windows Update service, right-click, and select Restart.
3. Run the Windows Update troubleshooter: Open Settings, navigate to Update & Security > Troubleshoot, select Windows Update, and click Run the troubleshooter.
4. Clear the Windows Update cache: Open Command Prompt as an administrator and execute the following commands:

     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

5. Disable third-party antivirus software: Temporarily disable any installed third-party antivirus software and try running Windows Update again.
6. Check for system file corruption: Open Command Prompt as an administrator and run the command:

     sfc /scannow

This command will scan for and attempt to repair any corrupted system files.

7. Perform a system restore: If none of the previous steps work, you might need to perform a system restore to a previous point when Windows Update was functioning correctly.