OAuth for on-premises w/o HMA

Back in April I wrote a post on Practical 365 how you can create in Azure AD apps and make OAuth for authentication available to your Exchange on-premises environment without the need of having Hybrid Modern Authentication (HMA) enabled. If you’re interested, you can find the article here.

5 thoughts on “OAuth for on-premises w/o HMA

  1. Is there now an ability with Exchange 2019 on-prem to use oAuth, but with your own IdP other than Azure AD?
    I.e. I want to do all authentication and policy control from a third party provider like OKTA, without the need of any Azure services?


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