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Forum Discussion

RyanH's avatar
RyanH
Icon for Nimbostratus rankNimbostratus
Nov 05, 2025

F5 breaking Exchange authentication

We have Exchange 2016 going through our F5 BigIP. It works nicely. When we add our new Exchange 2019 server, clients are unable to authenticate using the desktop version of Outlook. Auth works fine w...
application delivery
Aswin_mk's avatar
Aswin_mk
Icon for MVP rankMVP
Nov 11, 2025

The issue will come if you have oneconnect profile or you created the application using iAPP. or If possible, use SSL bridging (client→F5→Exchange all over HTTPS).Disable Server Name Indication (SNI) on the server SSL profile if your Exchange servers don’t support it. Also Disable HTTP/2 . try this things and verify if the issues are resolving or not.

 

BR
Aswin

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