As with every other topic related to this error I'm having trouble updating my PC here..I've tried troubleshooting, Image repair, manual update, refresh, safe mode, etc. cause I can't remember all the rest I've done. I'm posting my CBS along with this and hopefully someone can help me out...I have 54 important updates it seems. lol I think it messed up around the time Windows 8.1 came out and right when I tried to install it it said it couldn't and think that's where my problem began. I tried installing Microsoft.NET framework 4.5.2 but recieved this error; Final Result: Installation failed with error code: (0x000003F1), "The configuration registry database is corrupt. " (Elapsed time: 0 00:06:11). In my list of updates there are some for 3.5 so shows how long I've been unable to update, I've scaned my PC and cleaned it and done just about everything but nothing works. Running DISM to scan and repair the Image did nothing saying there are no corrupted files. I hope this will be enough info as I've done too much to remember. I ran SFCfix and it found nothing wrong at all with my PC.