Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Shaaban,
Before we proceed, I would require more information to assist you better.
- When do you receive the error message, while installing Office 2016 or while accessing Office application?
- How are you connected to internet?
You may run the fix it from the following article to remove all traces of the Office 2016 on the system.
http://support.microsoft.com/kb/2739501
Note: Ensure to save the Fix it file on the desktop and then run the file.
Once the Fix it completes then you may re-install Office 2016 and check how it works.
You may login to the My Account page on Office.com with the Microsoft account you used to register or purchase to download and install Office 2016 and check if it helps.
You may refer to the following link to sign into the My Account page.
http://office.microsoft.com/myaccount
Hope it helps. Try the suggestions and let us know the result at your earliest convenience.
Thank you.