Firewallruls for office 365 ProPlus

Question

Dear Microsoft Team,
please give me the required target servers and ports to run the software "Office 365 ProPlus" behind a firewall.
The main focus is on the application Excel and Word which are installed locally.
Since there is no contact to the Internet to date,
the software is blocked every 31 days, as the license cannot be verified here.
What are the required targets that I need to release in the firewall?
Thank you very much!

Answer 1

Hi @Waßerloos, Fabian ,

Office 365 requires connectivity to the Internet. The endpoints listed in the following link should be reachable for customers using Office 365 plans.

So in other words you need Internet and all the computers need to connect to the internet every 30 days to not get Office deactivated, you also need Internet to get Office 365 Emails and other services.

You'll find all the Office 365 required ports listed over at the official documentation below:

Office 365 URLs and IP address ranges
https://learn.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worldwide

The following URL and port needs to be open for the activation/licensing:

• Port 80, 443

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Best regards,
Leon