Hello, I just installed Windows 8.1 RTM and then activated it using my Windows 8 upgrade key with the slmgr -ipk command. But now I'm facing a few issues which are as follows: 1) Music and Video App updates are available in the Windows Store but they fail to update every time (Error Code - Video App update error 0x80073cf1 , Music App Update error 0x80246007) I've tried resetting windows store cache, troubleshooting Windows update in Action Center, etc., nothing seems to be working. I just wanted to know if the error has anything to do with Windows 8.1 shipping with newer builds of the Music & Video apps, hence the update not applying to them or am I just unlucky) 2) I am also unable to install .Net Framework 3.5 from the turn windows features on or off section in Program & Features section of the control panel (Error Code 0x800F0906) 3) Do I need to install AMD Catalyst drivers 13.1 (latest) on Windows 8.1, I have a Radeon HD 4600 series card? Please help. Thank you.