Troubleshooting Windows Updates can be a frustrating issue many times.

The steps outlined in this article

http://answers.microsoft.com/en-us/windows/forum/windows_10-update/windows-update-stuck-at-checking-for-updates/b79ecc03-5534-42fb-8847-43d2c8d98b94?linkId=16543816&Ocid=1.+Owned+NA+(Reactive)_Social_TWITTER_WindowsSupport_20150825_227327310&auth=1)

(PDF: Windows Update stuck at %22Checking for updates%22 – Microsoft Community)

have helped us quite a bit from time to time.

 

Notes:

net stop wuauserv

cd %systemroot%\SoftwareDistribution

ren Download Download.old

net start wuauserv

 

Windows Clean Boot