Forum Discussion
Calendar button missing - On Prem 2016 Exchange
I had exactly the same issue as you and have solved it by following OAUTH manual setup to the letter via this doc https://docs.microsoft.com/en-us/exchange/configure-oauth-authentication-between-exchange-and-exchange-online-organizations-exchange-2013-help?redirectedfrom=MSDN
Get-IntraOrganizationConnector |fl Name,TargetAddressDomains,DiscoveryEndpoint,Enabled
brought no errors but no data. I had previously ran HCW and this completed with no errors (I assumed the hybrid process was fully complete). Exchange 2016 on premises, premium office 365 with licenses applied for exchange online plan. No mailboxes have been migrated, all are on premises. On premises existing Mail contacts and groups WERE visible in exchange online admin. AD Azure connect was already run with optional hybrid exchange enabled. Calendar button did not appear in teams. Teams worked otherwise.
So I ran the manual configuration of OAUTH from that link and calendar button started to appear after 30 mins. Again, these are ALL on premises mailboxes, we have not migrated any mailboxes yet.
One caveat, at the end of the process you need to create an AD object - this object had already been created so it looked like HCW had at least tried to make the OAUTH link but hadnt fully completed it.
Microsofthas-dbk Enable "Exchange Hybrid Deployment" option in Azure AD Connect and re-run HCW (new version released yesterday - http://aka.ms/hybridwizard). The key is OAuth configuration.
EdsonSerrano as far as I know, the Exchange Hybrid option in Azure AD Connect should be enough. Exchange Hybrid configuration is something different and not needed for the calendar functionality in Teams when the mailbox resides on-premises as far as OAuth Authentication between Exchange and Office 365 is working.
Please correct me if I am wrong
Hey,
I have the same problem/question and I'm new to exchange and O365 authentication methods.
Can you tell how I can check if OAuth is functioning after configuring Azure AD Sync and if not, what need I to do to get OAuth working?
Kind Regards
