We are having an issue that the supplied URLs and IP addresses are not allowing activation of Office 365 through our Firewall.

We are using the lists provided here (Office 365 URLs and IP)

Can anyone confirm if these lists are correct?

Our usage scenario is: We block the Internet to students during exam periods, but need to maintain a connection to O365 for activation purposes. Students do NOT require access to Onedrive or Sharepoint services.

We have added the following list of FQDNs to the firewall:

activation.sls.microsoft.com

crl.microsoft.com

odc.officeapps.live.com  

clientconfig.microsoftonline-p.net

ols.officeapps.live.com

office15client.microsoft.com

login.windows.net

login.microsoftonline.com

officecdn.microsoft.com

But are still finding that O365 cannot resolve through them. Any suggestions on which ones I need to add the firewall?

Thanks in advance!

Hi,

Yes, this article is the Microsoft official document about Office 365 URLs and IP, these lists are correct. 

Then, please see this article, the firewall may have to be configured to enable access to the following:

• http://officecdn.microsoft.com
• https://ols.officeapps.live.com/olsc
• https://activation.sls.microsoft.com
• https://odc.officeapps.live.com
• http://crl.microsoft.com/pki/crl/products/MicrosoftProductSecureServer.crl
• http://crl.microsoft.com/pki/crl/products/MicrosoftRootAuthority.crl
• http://crl.microsoft.com/pki/crl/products/MicrosoftProductSecureCommunicationsPCA.crl
• http://www.microsoft.com/pki/crl/products/MicrosoftProductSecureCommunicationsPCA.crl
• go.microsoft.com
• office15client.microsoft.com
• sls.microsoft.com

Hope it's helpful.

Regards,

Still trying to resolve this. Unfortunately our firewall (a Palo Alto networks) does not allow for the use of the URLs in that format - I have to use either IP or FQDN (www.whatever.com).

But unfortunately I am still hitting issues so have lodged a case with them on how best to proceed.

Thanks for the info.