Hello! I had the same problem you have(had). I couldn't update from 38017 to 40040. I resolved it like this: I updated to 38285 and then to 40040 and it worked !
P.S.: I closed the antivirus and explorer.exe
Maybe this will hwlp you. Good luck!
Hello,
I'm 100% sure i have sp1 but when I try to install Clas Cab City it doesn't download and say it is not applicable to my installation version. Help?!
