For all searching for this Problem with Teams not showing the calender app using hybrid szenario. Refering to this basic guide: Sophos UTM: Create WAF to allow traffic through Exchange 2016 using the MS Connection Tool: https://testconnectivity…

Hello. This is a follow upto an old thread from about a year ago: https://community.sophos.com/utm-firewall/f/network-protection-firewall-nat-qos-ips/126571/microsoft-teams-calendar-through-waf (that thread is now locked) I've tried again to enable…

On-premises Exchange works fine with the WAF if you follow https://support.sophos.com/support/s/article/KB-000038003?language=en_US , but when customers switch to using Teams, I have issues with the Calendar synchronisation between the on-premise Exchange…