I made a big mistake for using evaluation server software in production, I’m thinking that I can apply the proper license in a later stage, but I am absolutely wrong!!
Luckily I found an article from Technet that can upgrade an evaluation license to a full retail license, I tried this with my VL key and thank god it worked!!!!!!!!!
Here’s the link: http://technet.microsoft.com/en-us/library/jj574204.aspx?Loc=zbtfz_zYFCz&prog=zEvalz&prod=zWSz
below is the key command.
From an elevated command prompt, determine the current edition name with the command DISM /online /Get-CurrentEdition. Make note of the edition ID, an abbreviated form of the edition name. Then run DISM /online /Set-Edition:<edition ID> /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEula, providing the edition ID and a retail product key. The server will restart twice.