I am trying to integrate MS Teams with on premise Exchange, i can't get the calendar button to appear. I am running Exchange 2013 CU20. I have seen some posts stating this won't work unless running at least on 2016 CU3, i've seen other posts stating 2013 should work for at least the calendar integration. I realise some other features won't work. To let you know what i've done so far:
- Enabled Exchange Hybrid Deployment from AAD
- Have run minimal hybrid from HCW. Did have an error relating to MRS Proxy endpoint but this was resolved with this - Set-WebServicesVirtualDirectory -Identity "Server\EWS (default Web site)" –MRSProxyEnabled $true – WSSecurityAuthentication $True
- Have manually configured oauth authentication from using steps 1-5 from here - https://docs.microsoft.com/en-us/exchange/configure-oauth-authentication-between-exchange-and-exchan...
- Have run Synchronization, Notification, Availability, and Automatic Replies test from https://testconnectivity.microsoft.com/. Everything is green apart from the free/busy test, however as i've only run minimal hybrid i've taken that as expected behaviour.
I have no plans to move any mailboxes to Exchange online, at the moment i'm only interested in getting the calendar integration working. Does anyone have any suggestions on how to troubleshoot? Is the version of Exchange the problem?
