I am running into a problem on a laptop that KB3139940 update constantly fails every time the pc boots. I ran sfcfix and it fixed 140 of 200 errors, will upload cbs.log in a few hours. Is anyone else having this issue with this update. For now I hid the update but would like to get to the cause of this without reinstalling Windows 7. Another problem is WUSA won't uninstall certain nagware updates by batch file. Any ideas? thank you guys!