How to fix Window is Not Genuine error

If you are seeing an error on your desktop bottom right corner saying “The copy of Windows is not genuine” then that means either you are using the OS without a serial key or if you bought serial key then there is virus in your computer which corrupted the serial key file. If you are using windows without serial key then this is not a permanent fix. If you bought this then this is a permanent fix and would last until virus come again and corrupt that file.

Step 1) First search for Command prompt (cmd) on your computer and then right click on it and then click on Run as administrator.

Step 2) After that type this command in the command prompt “SLMGR -REARM” and press enter.


Step 3) A box will appear saying command successfully executed. Restart now. Click OK. And then manually restart your computer.


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