Hey, I have a support request open for this but I figured I would put it out here to see what I could get before my remote session next Monday. When connected to SSLVPN through the XG I can not authenticate to O365 via ADFS using Outlook. Skype for Business works, MS Teams works, One Note, and One Drive all work... We are using IPS and SSL Decryption. I have added in all recommended exclusions using Sophos' provided tar file which was uploaded to my system. I have also added exclusions for Microsoft's second level domains as well as our ADFS URL's
There is nothing obvious in the logs AT ALL... What gives? I am like 99.9% sure this is SSL related but even when I put a straight up open rule outbound with no filtering and SSL decryption disabled it STILL fails...
If I disconnect the VPN and open Outlook... BAM it fires right up.
This thread was automatically locked due to age.
