When you cloned a virtual machine for server 2012 you will face Duplicate SID issue which can create many issues, So in this Tutorial I am going to generate new SID for server 2012 R2.
How to Generate a new “SID” In Server 2012 R2
Step-1 Open “C:\Windows\System32\Sysperp.exe” with Administrator Rights.
Step-2 : System Preparation Tool’s windows will open follow the screenshot and click OK to reboot PC and it will generate new SID.
That’s it ..!