Getting "Ask your admin to add https://domain.com/path_to_calendar to the allowlist" error when subscribing to external calendar
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
Summary
In Team Calendars, when attempting to subscribe to external calendar by URL (i.e pagerduty), user is receiving this error:
1
You can't subscribe to this calendar. Ask your admin to add https://domain.com/path_to_calendar to the allowlist.Cause
Calendar service is not properly added to the Allowlist
Solution
Go to Settings > General Configuration > Allowlist and add domain for the calendar service. Make sure URL is absolute without any trailing "/", i.e http://domain.com
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