I used Windows Repair from Tweaking.com. I performed a pre-scan and got the following message: Scanning Windows Packages Files. ¦ Started at (5/24/2016 9:55:33 PM) ¦ ¦ These Files Are Missing: (Total: 2) C:\Windows\servicing\Packages\Package_for_KB2621440_RTM~31bf3856ad364e35~amd64~~126.96.36.199.cat C:\Windows\servicing\Packages\Package_for_KB2621440_RTM~31bf3856ad364e35~amd64~~188.8.131.52.mum ¦ 2 Combined Problems were found with the packages files, these files need to be replaced (These mainly only effect installing Windows Updates.) ¦ The SFC (System File Checker) doesn't scan and replace some of these files, so you may need to replace them manually. ¦ ¦ THESE FILES DO NOT KEEP THE REPAIRS FROM WORKING; YOU MAY STILL RUN THE REPAIRS IN THE PROGRAM. ¦ ¦ If you need help in replacing these files, post on the Forums at Tweaking.com for help. ¦ ¦ Files Checked & Verified: 5,041 ¦ ¦ Done Scanning Windows Packages Files.(5/24/2016 10:05:01 PM). How do I replace the 2 missing files? Thank you.