If your copy of Windows is not genuine, you will get an error message and Windows will no longer work.
There is an easy fix you can apply in minutes that can get rid of this error message until you purchase a legit copy or solve your product key issue in Windows.
Follow these steps to fix
Click Start
and type cmd in the search boxOptionally go to Start > All Programs > Accessories > Command Prompt
Right-click on cmd and choose Run as administrator
In the command prompt box type the command below and then press Enter
SLMGR –REARMIf it fails, try typing in this command below (Only difference is / instead of -) and then press Enter
SLMGR /REARMIf this works, then you will see this message
Now reboot your computer and you should not see the Windows is not genuine message again for at least a couple of months
If you do this too many times, you will get:
error 0xc004d307 The maximum allowed number of rearms has been exceeded
You will need to edit the registry to get around this with the fix below but I would only advise this for advanced users and make sure you backup your registry first!
Click Start
and type regedit in the search box, click on regedit under Programs and click Yes on User Account Control if promptedIn the Registry Editor, browse to
HKEY_LOCAL_MACHINE - SOFTWARE - Microsoft - Windows NT - CurrentVersion - SoftwareProtectionPlatformRight click on SkipRearm
Click Modify and change Value Data to 1
Restart your computer
