RDOOutOfOfficeAssistant object does not work with Outlook 365
I wrote a VSTO add-in for outlook. I am in a Microsoft Exchange environment in my company. I use the RDOOutOfOfficeAssistant object to set an OOF message (StartTime, OutOfOfficeTextInternal, …). Everything works fine on my PC with MS Outlook 2013 32-bit.
When I deploy the add-in to MS Outlook 365 MSO 32-bit machines, the part that uses the RDOOutOfOfficeAssistant object doesn’t work. When I monitor the program part with a (Visual Basic) Try – Catch, I get an error message “EWS is not available: HTTP error 401 from https://outlook.office365.com/EWS/Exchange.asmx“.
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