On one fine day when I was busy with one of my project, one of my collegue tapped my shoulder, a bit panicking. He : Heiry, take a look at this... Me : Dude, what on earth have you done? (serious face) He : I dont know man, I uninstalled .Net Fx 4.5, reboot the machine and this happened Me : Dude, What on earth was the reason you uninstalled .Net Fx 4.5? He : Well, I thought .... Me : (Evil Smile) So here is the thing. When we uninstalling .Net Fx 4.5, those related features would be uninstalled as well, including a feature called User Interfaces and Infrastructure. Please refer to  here . There are 2 ways to get it done - locally or remotely. For the purpose of this post, I will do it remotely from another Windows Server 2012 member server. Issues : Unable to view GUI in Server 2012. Troubleshooting : it is straight forward, GUI is disabled, RDP to the server, the only screen one can see is : Resolution :  RDP to another Serv