After upgrading the windows 10, I uninstalled office 365 from the new win 10 installation and deactivate the related copy. After reinstalling Office 365 , it failed to activate. and unlicensed product is shown on top of the applications:
I'd tried to activate the product by entering micorsoft account log in information:
But after trying to sign in, only the sign in window close and nothing happened for the activation, still show:
Please help
Patrick