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Background info:
We have our own on-prem Exchange 2016 server, and we sync users to Microsoft 365 where each user has en E3 license, but ofcourse the user doesn't have email in Microsoft 365, since we have on-prem Exchange.
Some users use Jira, and would like to be able to sync their calendar from Jira to their own calendar on the on-prem Exchange. But this has to go through some plugin that can only sync to Microsoft 365: https://tempo-io.atlassian.net/wiki/spaces/THC/pages/359825498/Connecting+Your+External+Calendars+to+the+My+Work+Calendar
Question:
Is it possible to create a Microsoft 365 calendar for a synched user with the same email address as on the on-prem Exchange? And thus be able to sync calendars from Microsoft 365 to on-prem Exchange?
This Jira plugin has been tested, and doesn't do the job wanted: https://marketplace.atlassian.com/apps/1214714/calendar-sync-for-jira?hosting=cloud&tab=overview
This is not a question about Jira, just Jira related :)
Any help is very much appreciated!
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Based on my knowledge, it's not supported to only create calendars for users without creating mailboxes. Since you have synced user accounts to the cloud, why not migrate on-premises mailboxes to Microsoft365? So that you can use the Office 365 Calendar integration option in the article your provided.
We are not ready to migrate to Microsoft 365 just yet, I should've wrote that in the initial post.
We have a complex on-prem setup that we need to sort out, before moving to Microsoft 365, so that is why I'm curious if there is a way to sync calendars :)
I'm afraid that it's not available to create Microsoft365 calendar only for user mailboxes on Exchange on-premises. You may have to contact Jira side to see if there are other options for you to sync calendars of on-premises Exchange users.
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A user cannot have an office 365 mailbox or calendar without being licensed and migrated.