Microsoft's fix has been fully propagated and OTD is now able to subscribe to calendar events normally via Microsoft Graph using delegated permission. This incident is now resolved.
Posted Apr 18, 2022 - 10:09 MDT
A fix has been implemented by Microsoft and is being deployed. We are monitoring the results.
Posted Apr 15, 2022 - 15:56 MDT
After investigation, Microsoft Engineers have been able to isolate the issue to certain access level to specific O365 mailbox folders when using delegated permission via Microsoft Graph API. Microsoft is currently working on a fix with high priority.
Posted Apr 15, 2022 - 10:28 MDT
We are continuing to investigate this issue with Microsoft. This issue is only impacting a small subset of OTD tenants that are integrated with Microsoft O365 Graph as a service.
Posted Apr 14, 2022 - 18:00 MDT
The issue appears to be isolated to a few OTD tenants that are integrated with Microsoft O365 Graph as a service (using service account) and it only impacts RP Trios that are calendar registered to OTD using OTD generated credentials.
We have a better understanding of the issue now and we are continuing to investigate. The issue appears to be isolated to a very small subset of customers using endpoint type "RP Trio" only. We will provide more updates as we progress with the investigation.
Posted Apr 13, 2022 - 14:13 MDT
The issue seems to be impacting only a subset of endpoints. We are currently investigating.