A family of Microsoft word processing software products for creating web, email, and print documents.
Hi Devmel!
I am Shakiru, an independent advisor and a user like you, and I am glad to be helping you out today.
The error code you got has to do with authentication.
Please, ensure you clear your browser cookies and cache.
Did you have any Office installed on your Mac? If yes, you need to completely uninstall the Office and then try to install Microsoft Word (365 again).
Have you tried to create a new user profile on your Mac and then reinstall Office 365?
Please let me know how it goes and if you need any other assistance and I will be more than happy to help further.
Thank you
Best Regards, Shakiru