How to solve the error code 0x8024402c: Windows Update encountered an unknown error in Windows Server 2012 R2

There are several steps you can take to solve the error code 0x8024402c in Windows Server 2012 R2:

1. Check your internet connection: Make sure your server is connected to the internet and that there are no connectivity issues.
2. Restart the Windows Update service: Open the Services app and locate the Windows Update service. Right-click on it and select Restart.
3. Clear the Windows Update cache: Open the Command Prompt as an administrator and type 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

4. Disable third-party antivirus software: Sometimes, third-party antivirus software can interfere with Windows Update. Try disabling your antivirus software temporarily and see if that resolves the issue.
5. Run the Windows Update troubleshooter: Open the Control Panel and select Troubleshooting. Under System and Security, select Fix problems with Windows Update.
6. Check for updates manually: Open the Settings app and select Update & Security. Click on Check for updates and see if any updates are available.