Windows Update error

Sometimes when updating my old Windows XP or 2003 system with Windows update, I receive the following error message:-

"Network policy settings prevent you from using this website to get updates for your computer"

To resolve this error, do the following:-

1. Stop the Windows Automatic Update Service

2. Goto C:\Windows\System32 folder

3. Rename the "SoftwareDistribution" folder to "SoftwareDistribution_Old" or to some other name.

4. Check all the GPO policies related to Windows Update and make sure that they are (if any) set to "not defined"

5. Search through the registry and delete any keys with "NoWindowsUpdate" or "DisableWindowsUpdateAccess".

6. Start the Windows Automatic Update service.