At home I normally disable/enable my Network Connection to provide increased security since I do not have a need to be online most of the time.
Note that this problem MAY not be caused by the updates themselves, since they did not cause this problem at work.

I did find a fix via Google, rebuild of CatRoot2 folder, steps are....
- Boot to Safe Mode (no networking)
- Open Command Prompt, enter
net stop cryptsvc
and close dialog when stopped - Goto C:\WINDOWS\system32\CatRoot2
WARNING - NOT folder CatRoot - Rename folder CatRoot2 -> OLDCatRoot2
- Reboot normally (forces rebuild of CatRoot2)
- If you can disable/enable Network Connections, you can delete folder OLDCatRoot2
Hope this works if you have this problem.