Configuring Outlook 2016 for MAPI/EWS using non cached mode fails.
Problem reported by Torben Nielsen - 3/8/2020 at 9:03 AM
Configuring Outlook 2016 for MAPI/EWS and selecting to NOT 'Use Cached Exchange Mode' causes Outlook to be unable to start: 'The attempt to login to Microsoft Exchange has failed'.

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echoDreamz Replied
I believe I remember Tim saying that only cached mode works currently. 
Larry Duran Replied
Employee Post
This is correct.  Only cached mode is supported with MAPI at this time.
Larry Duran
Software Developer
SmarterTools Inc.
(877) 357-6278

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