Office 365 Calendar permissions error on Outlook 2010 & 2013 but not 2016
Question
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I'm hoping this is the correct forum for this question.
I have a hybrid config of Office 365 and Exchange 2010. Currently only two rooms have been migrated to Office 365 (for a couple Surface Hubs).
When the calendar for these two rooms are added to one of the room admins' Outlook 2010/2013 or On Prem OWA account they have no ability to create meetings directly in the calendar and if they try to access the calendar's properties they get the following message:
This error is obviously incorrect as the user has been given full rights to the mailbox. If the same user does this in Outlook 2016 then everything works correctly.
While we do have plans to move all 600 users to Office 2016, this will be a gradual move. I still need Outlook 2010 and 2013 to be able to carry out these tasks. Is this simply a configuration change I need to make in the older Outlook versions?
