1) Open cdm as Administrator
2) Digit:
DISM /online /Get-TargetEditions
3) Press Enter
4) Digit:
DISM /online /Set-Edition:ServerStandard /ProductKey:Y4TGP-NPTV9-HTC2H-7MGQ3-DV4TW /AcceptEula
5) Press Enter and wait
6) Reboot the system
Now you have converted the evaluation version into full ones.
This procedure works also in Windows Server 2012 but you need to change this keys.
8NVYK-4BRVF-7JKY8-J67YW-DGK8M
QKMNW-XDHKQ-2C6FP-D8KB6-8TV6W
RJHGD-N7JC8-Y2XH7-GMGVQ-DV3KJ
2MXNT-KMDDR-WW728-XWB9R-3C9CB
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