How to Resolve Error Code 0x800705B4: Windows Update Issue in Windows Vista

Here are several methods to resolve error code 0x800705B4 in Windows Vista:

1. Restart your computer: Often, a simple restart can resolve the issue.
2. Verify your internet connection: Ensure your internet connection is stable. If using Wi-Fi, try connecting your computer directly to the router with an Ethernet cable.
3. Disable antivirus software: Your antivirus might be interfering with Windows Update. Temporarily disable it to see if that solves the problem.
4. Run the Windows Update troubleshooter: Utilize the built-in troubleshooter to identify and fix Windows Update issues. Navigate to Control Panel > System and Security > Troubleshoot common computer problems > Fix problems with Windows Update.
5. Reset Windows Update components: If the troubleshooter fails, reset the Windows Update components. Open Command Prompt as an administrator and enter 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. Perform a system restore: If all else fails, restore your system to a previous state before the issue began.