Fix error This Copy Of Windows is not Genuine

STEP 1 :   Open CMD with run as administrator
STEP 2 :    Type SLMGR -REARM  in cmd

STEP 3 :  You have to make sure to type the given command in the above given manner without making any kind of mistake in the administrator mode. Then hit the Enter button

STEP 4 : Once that is done, then you will get a confirmation window which will have the details of the given command execution.

STEP 5 : So, now you can restart the PC or laptop and you will not get any kind of error like “this copy of windows is not genuine“