Update - The issue remains ongoing, with no change in behavior observed. We have submitted a Severity A support ticket with Microsoft and are currently awaiting their response regarding the Graph API errors impacting a subset of calendar and event creation requests.
Our engineering team continues to monitor closely and will provide updates as soon as new information becomes available.
Jun 23, 2025 - 14:03 PDT
Our engineering team continues to monitor closely and will provide updates as soon as new information becomes available.
Jun 23, 2025 - 14:03 PDT
Identified - We are seeing `ErrorInternalServerError` API errors from a small number of Microsoft grants when attempting to create new events or new calendars in the Nylas API.
We have confirmed that these errors are coming from Microsoft Graph API email servers and have reached out to Microsoft to address this issue.
Additionally, if you retry a failed API call to create a new calendar, a different error 409 `ErrorFolderExists` may be returned. This error is also from Microsoft Graph API.
This does not appear to be affecting any on-premise Exchange (EWS) grants or other email providers.
Jun 23, 2025 - 10:55 PDT
We have confirmed that these errors are coming from Microsoft Graph API email servers and have reached out to Microsoft to address this issue.
Additionally, if you retry a failed API call to create a new calendar, a different error 409 `ErrorFolderExists` may be returned. This error is also from Microsoft Graph API.
This does not appear to be affecting any on-premise Exchange (EWS) grants or other email providers.
Jun 23, 2025 - 10:55 PDT
Update - We’ve received confirmation from Microsoft that their backend team has made partial progress toward resolving the upstream Graph Calendar API issue. Specifically, they’ve reported that the API fix is approximately halfway saturated through their infrastructure.
Microsoft has extended the tentative ETA for full production rollout to June 30, 2025.
In the meantime, our existing workaround remains in place, and core functionality continues to operate with minimal disruption. We will continue to monitor for any changes and provide updates as we receive them from Microsoft.
Thanks for your continued patience
Jun 17, 2025 - 18:29 PDT
Microsoft has extended the tentative ETA for full production rollout to June 30, 2025.
In the meantime, our existing workaround remains in place, and core functionality continues to operate with minimal disruption. We will continue to monitor for any changes and provide updates as we receive them from Microsoft.
Thanks for your continued patience
Jun 17, 2025 - 18:29 PDT
Update - We’re still monitoring the issue impacting Microsoft’s Graph Calendar API, which affects access to some calendar data.
Microsoft has completed internal testing and is now working on finalizing a fix. Although this issue lies outside of our product, we remain in close communication with their support team and are pushing for timely updates.
We’ll continue to share more information as it becomes available. Thanks for your patience.
Jun 06, 2025 - 10:07 PDT
Microsoft has completed internal testing and is now working on finalizing a fix. Although this issue lies outside of our product, we remain in close communication with their support team and are pushing for timely updates.
We’ll continue to share more information as it becomes available. Thanks for your patience.
Jun 06, 2025 - 10:07 PDT
Update - We’ve been in contact with Microsoft support regarding the ongoing issue with their Graph Calendar API. Microsoft has acknowledged the problem and confirmed that their engineering team is actively working on a resolution.
We’ll continue to monitor the situation and provide updates as new information becomes available. Thank you for your patience.
Jun 04, 2025 - 10:21 PDT
We’ll continue to monitor the situation and provide updates as new information becomes available. Thank you for your patience.
Jun 04, 2025 - 10:21 PDT
Monitoring - We’ve implemented a workaround to mitigate the impact caused by an issue with Microsoft Graph API. As a result, the affected functionality has been restored, and users should no longer experience errors when accessing related features.
Please note that this is a temporary mitigation, and the root cause remains unresolved on Microsoft’s side. We are actively monitoring for updates and will revert our changes once Microsoft provides a permanent fix.
We appreciate your patience and will continue to keep you informed.
Jun 03, 2025 - 10:04 PDT
Please note that this is a temporary mitigation, and the root cause remains unresolved on Microsoft’s side. We are actively monitoring for updates and will revert our changes once Microsoft provides a permanent fix.
We appreciate your patience and will continue to keep you informed.
Jun 03, 2025 - 10:04 PDT
Update - We are still observing the ongoing issue with the Microsoft Graph API, which continues to affect some Microsoft grants. Impacted users may experience 500 and 504 errors on calendar-related endpoints, including delays or failures in webhook delivery.
As of now, there has been no resolution or update from Microsoft. Our team will continue monitoring and will provide further updates as soon as we detect meaningful changes.
This will be our final status page update for today unless there is a significant development. Thank you for your patience.
Jun 02, 2025 - 17:30 PDT
As of now, there has been no resolution or update from Microsoft. Our team will continue monitoring and will provide further updates as soon as we detect meaningful changes.
This will be our final status page update for today unless there is a significant development. Thank you for your patience.
Jun 02, 2025 - 17:30 PDT
Update - We are continuing to monitor the ongoing issue with the Microsoft Graph API, which is impacting some Microsoft grants. The issue is still causing 500 and 504 errors on calendar-related endpoints, and delays or failures in webhook delivery for affected users.
There has been no meaningful change since our last update. Our team remains in contact with Microsoft and is actively monitoring for improvements. We will provide further updates as soon as we see progress or receive new information.
Jun 02, 2025 - 16:13 PDT
There has been no meaningful change since our last update. Our team remains in contact with Microsoft and is actively monitoring for improvements. We will provide further updates as soon as we see progress or receive new information.
Jun 02, 2025 - 16:13 PDT
Identified - We are currently experiencing service degradation caused by an issue with the Microsoft Graph API. As a result, some Microsoft graph grants are experiencing 500 and 504 errors. For affected users, this may impact webhooks and the following API calls:
calendars
event
scheduler
Our team is actively monitoring the situation and has reported the issue to Microsoft. We will continue to provide updates as more information becomes available
Jun 02, 2025 - 12:00 PDT
calendars
event
scheduler
Our team is actively monitoring the situation and has reported the issue to Microsoft. We will continue to provide updates as more information becomes available
Jun 02, 2025 - 12:00 PDT
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