How to activate Microsoft office authentication by off-line.
A customer in Minayoshi, Ichihara, Chiba Prefecture, contacted us for assistance because he was unable to activate his Office license.
Every time we opened Word or Excel, we was asked to activate the license.
Licensing can be authenticated from sign-in or from a product key.
off-line authentication
In this case, the solution was to authenticate from the product key.
Enter the product key and reboot to complete.
Important point
Restart the computer after activation.
Close the browser or file in advance as you may lose your save.
Please note that if you lose your product key, it cannot be reissued.
Thank you for contacting us.