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has-dbk's avatar
has-dbk
Copper Contributor
Mar 17, 2020
Solved

Calendar button missing - On Prem 2016 Exchange

Hi, We have a on-prem 2016 exchange with the lastest updates, but we still doesn't get the Calendar button in teams. Is this even possible when we only have an onpremise exchange and not hybrid...
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  • HardWorkingITguy's avatar
    HardWorkingITguy
    Mar 30, 2020

     

    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.

     

WKGeorge's avatar
WKGeorge
Copper Contributor
Apr 22, 2020

whoa_nelly_v  I'm beyond frustrated as well.  Feel like I must be missing a step, but can't figure it out.  I did only do steps 1-5 on the manual Oauth process as someone here recommended, but the test at the end of the article was successful.  Let me know if you find the missing piece!

whoa_nelly_v's avatar
whoa_nelly_v
Copper Contributor
Apr 23, 2020

WKGeorgestill nothing on this side.  Been going back and forth with MS support on this.  The only other thing Ive done which this doesn't speak about was enable EWS on the on prem environment by running set-organizationconfig -ewsenabled $true.