Problems with an internet connection can corrupt the downloaded Microsoft or Windows Update cache. You’ll see numerous error codes that stall the manual update process.
When this happens, clear the update cache. At the command prompt, enter the following:
- net stop wuauserv
- cd \windows
- rd /s softwaredistribution
- net start wuauserv
This frequently solves the issue, but may not in all instances – YMMV.