Calendars not working in Outlook Addin?
Nothing of any interest or obvious relation appears in the event logs.
I have .Net 4 (multiple flavors), VSTO 2010 runtime, installed on Windows 10 with Office 2016. The Service Manager console is installed locally, but the DLL's for a no-console install are also copied into the add-in folder because I am testing this package for wider distribution. Other functions of the add-in work perfectly well. I have also seen identical behavior when connected to each of my SCSM environments.
This has worked in the past, but not lately. Unfortunately, I have not been paying close enough attention to pinpoint what else might have changed that could be a contributing factor.
I will submit an Incident for this if needed, but I want to be sure that I am not missing something, first.