how to fix windows not activating

Question

after i took my laptop to school to get all of the things i needed instaled put on i got it back and i had windows 11 pro education activated instead of windows 11 which i had before. since this has happened i have the watermark saving that i need to activate windows but everytime i try it says that it is unable to be activated and now i cant change anything on the laptop as it says that windows needs to be activated to be able to personalize the computer. how do i activate windows now that the product key dosent work and is this all because of me now having the pro education version? also why is the pro education version not recognised as windows that is activated?

Answer 1

See: Using the Windows Activation troubleshooter