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

There are 2 types of Windows Activation - KMS and MAK. However, for this post, I won't be discussing on what are those or their differences, as this post is to discuss an error in regards to KMS implementation.  Issues : The following error has occurred. Please resolve the error and try again. Description : Access is denied Troubleshooting   Used multiple IDs (Domain Admins as well as Local Admins), however issue stll persist. Thus, it is safe to rule out User ID privilege from the root cause.  UAC is enabled. Resolution :  Go to Volume Activation Tools again, but right click at it and choose Run as Administrator ( not Pin to taskbar, sorry for that ) Browse to your server name ,and press Next. Punch in alternative credential if needed.  If you need to activate your KMS, get it activated. In this case, I already activated my KMS, so I will skip to Configuration.  Once all steps above compl

I am pretty sure this issue occurred to almost all Wintel or Service Desk Engineers - User came to us, make a report saying that his or her ID was locked, and he or she did not know why (or did they?). Nevertheless, I have compiled on how I checked and resolved this issue in my environment, hopefully it will help yours too. Issues : Troubleshooting Account Locked Troubleshooting   Download Account Lockout and Management Tools from here . Get it extracted. Launch LockoutStatus.exe Go to File | Select Target... Put in target user name, domain, and if needed alternate domain admin credential. Press OK once done. Collecting data...