Ever seen this error “Error 0x80244022 occurred while downloading update notifying dependent calls” in your Windows Update.log?
Typically you have a Windows client, set up to use WSUS, but still you see that it keeps banging at http://update.microsoft.com for updates. Most likely this is caused by a corrupt download, and the best way (if you ask me) is to delete the WSUS client cache and let it check for updates on the local WSUS server instead.
To delete the cache:
On the client, stop the service “Automatic Updates”, delete (or rename) the SoftwareDistribution folder under %windir% (typically C:\Windows or C:\Winnt) and start the “Automatic Updates” service again.