After installing build 9879, I have the issue of some shortcuts turning generic. Icon Rebuild , Restore default associations of ico, browser cache cleanup, IE reset, none of those work. So, I did a Refresh. After an hour, it came back with these messages.................. "There was a problem refreshing your PC. No changes were made. Check for solution to this problem." That reminds me that when we upgraded from Win 8 to 8.1 via Windows Store, many of us also had problem doing Refresh. I was advised to reinstall using the Enterprise ISO. I might, but too pissed to do it now. adding..... I did click " Check for solution to this problem ", did not get any response back.