Vijay Kumbhani.

To Reset the DSRM Administrator Password Click, Start, click Run, type ntdsutil, and then click OK. At the Ntdsutil command prompt, type set dsrm password. At the DSRM command prompt, type one of the following lines: To reset the password on the server on which you are working, type reset password on server null. The null variable assumes that the DSRM password is being reset on the local computer. Type the new password when you are prompted. Note that no characters appear while you type the password. -or- To reset the password for another server, type reset password on server servername, where servername is the DNS name for the server on which you are resetting the DSRM password. Type the new password when you are prompted. Note that no characters appear while you type the password. At the DSRM command prompt, type q. At the Ntdsutil command prompt, type q to exit.

How to Renew 120 Days of Terminal License of Windows 2012. In Server 2012 the key is here  HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod     You have to delete the Grace Period Key (leave only default value)but to do that you will have to change the permissions on the folder and all items within it. Note: We did not have to delete or rename %WINDIR%\system32\lserver\TSLIC.edb  After deleting the Reg Key we rebooted and we went from 0 days to 120 days.