Change SID on Windows Server 2008 R2

Using NewSID to change SID on Windows Server 2008 R2 will destroy operating system. So you should only use sysprep tool to change SID on Windows Server 2008 R2.

RUN>sysprep will take you to sysprep folder (c:\Windows\System32). Open sysprep application.  Select Enter System Out-of-Box Experience (OOBE). Important: select Generalize if you want to change SID, it’s not selected by default. As Shutdown Options select Reboot.