Team Calendar synchronization with Outlook using CalDAV is causing duplicate Events on every synchronization.
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Problem
When synchronizing Events created in Outlook 2013 with Team Calendar using CalDAV, all Events are being duplicated on every synchronization.
Resolution
Make sure to tick the Use time range filter checkbox in advanced settings
Note: You might have to re-create all recurring Events, after which the synchronization will work as expected.
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