The September 9 Windows Updates, 12 Important and 1 Optional, when I installed them on my up-to-date Windows 8.1 virtual machine I use for testing, broke system protection.
SFC and DISM were required to fix the problem, as shown here:
After correcting the above, I have not been able to find any problems with the operation of the system with these updates.
-Noel
Detailed how-to in my eBooks: | Configure The Windows 7 "To Work" Options |