Unable to send email through OWA when using AD FS pre-authentication

Richard Mlynka 21 Reputation points
2021-10-11T18:23:58.177+00:00

Hello,

we are unable to send email through OWA published through WAP server 2022 when using AD FS pre-authentication. Also delete of mail does not work.
No problem to read emails.
We use Exchange 2019 CU11.

Everything works when we make following changes (every other setting stays the same):

  • we go through WAP 2019
  • we change pre-authentication on WAP 2022 to pass-through
  • we access internal OWA directly from WAP 2022

Looks like HTTP PUT is not going through when using AD FS pre-authentication on WAP 2022.

Any idea what to try to make WAP 2022 with AD FS pre-authentication for OWA work?

P.S. AD FS on WAP 2022 works for our CRM2016

Thank you,

Kind regards,
Richard

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