Over the last several months, we have seen many customers adopting Microsoft Teams, even if their mailboxes are still hosted in an on-premises environment. One of the common issues in this scenario i...
Updated Nov 09, 2023
Version 8.0
Blog Post
Great Article..
Having Exact issue. Team Calendar not available
HCW failed to configure Oauth For Hybrid Full deployment- Exchange 2016
1. Manually Configured Oauth successfully using https://docs.microsoft.com/en-us/exchange/configure-oauth-authentication-between-exchange-and-exchange-online-organizations-exchange-2013-help2
2. Test EWS and AutoD successfully. Freebusy working...RCA test pass successfully
3. Team Calendar icon was visible for On-prem mailbox but was getting "cannot loading calendar error"- Teams log shows isMailboxDiscoverable: true but FW logs was showing drops from Microsoft IP address for Team.
4. Teams IP address were added FW rule but now Calendar Icon disappeares and Team logs now shows mailbox isMailboxDiscoverable: false
5 FW logs is no longer showing any request coming from Microsoft IP Team address when using TEAMS..
6. Cannot figure out how to get back Teams Calendar Icon for on-prem mailboxes. Followed documentation - pass all check.
Anyone knows the exact list of Microsoft Ip address that need to be allowed in FW for TEAMS ?