Forum Discussion
Teams integration with exchange on prem
Hello,
I would like the possibility to schedule meetings in microsoft teams.
Currently I have already created the domain on o365 and synchronized AD users.
In fact, I am able to use domain credentials on Microsoft teams.
Now I would like to have the possibility to schedule meetings.
I currently have an exchange 2016 (CU 17) on prem.
Searching the internet I found the following article https://docs.microsoft.com/en-us/MicrosoftTeams/exchange-teams-interact.
From what I understand, in order to use this functionality with the exchange on premises, Exchange OAuth authentication protocol must be configured.
What I need to understand is that if I have to create a hybrid exchange infrastructure in order to configure Exchange OAuth authentication protocol.
Is it possible to configure Exchange OAuth authentication protocol without a hybrid infrastructure?
Thank you
Regards
- Yes, you need to make the hybrid deployment in order to be able to have the calendar feature in Teams working as you need
3 Replies
The accepted answer makes an important point about the integration requirements, but there is a distinction between needing Hybrid components and actually running the Hybrid Configuration Wizard (HCW).
Teams Calendar integration with on-premises Exchange requires synchronized identities, OAuth authentication, and accessible Autodiscover and EWS endpoints. However, HCW is not strictly required to configure these components.
I recently configured this manually with Exchange Server SE, keeping all user mailboxes on-premises. I explained the individual components and configuration steps in my article on Exchange Server and Teams Calendar Integration Without HCW.
The key components were the EvoSTS AuthServer and Exchange SPNs registered in Microsoft Entra ID, along with the necessary Entra Connect Sync and HTTPS endpoint configuration.
One additional distinction: Teams Meeting Delegation requires further configuration, including the Teams Calendar Scheduler PartnerApplication and restricted RBAC permissions.
So, the requirement is not necessarily to run HCW, but to ensure that the underlying identity, authentication, and connectivity components are configured correctly.
- Yes, you need to make the hybrid deployment in order to be able to have the calendar feature in Teams working as you need
Thanks for the reply
