Overcoming Error Code 0x800705b4 in Windows Server 2008 R2

To resolve the error code 0x800705b4, which occurs when Windows Update fails in Windows Server 2008 R2, follow these troubleshooting steps:

1. Restart the server: Often, simply restarting your server can clear errors preventing updates. Restart your server and attempt the update again.
2. Ensure stable internet connection: Confirm that your internet connection is stable and active. For better reliability, connect directly to your router using an Ethernet cable if you are currently using wireless.
3. Temporarily disable antivirus software: Antivirus programs can sometimes block or interfere with Windows Update. Disable your antivirus software temporarily and try updating again.
4. Use the Windows Update troubleshooter: This built-in tool can diagnose and fix common issues with Windows Update. Navigate to Control Panel > Troubleshooting > System and Security > Fix problems with Windows Update and run the troubleshooter.
5. Reset Windows Update components: If the troubleshooter does not resolve the issue, reset the Windows Update components. 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   

6. Manually install updates: If automated updates continue to fail, download and manually install updates from the Microsoft Update Catalog website.