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How to fix windows 10 activation failed with error code 0x803f7001-how to fix windows 10 activation error 0x803f7001-windows 10 activation error 0x803f7001-error 0x803f7001.
Method: 1
goto command prompt(admin)
type slmgr -rearm commmand.
Then once restart your pc.
Method: 2
goto run then type regedit
now locate hkey-local-machine-software-microsoft-windows nt-current version
click product id then modify it.
finally the error is fixed.
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