Monitoring - Microsoft has re-opened a previous incident for an issue that is affecting third party connections to a small number of Outlook.com mailboxes and other free Microsoft email accounts (link to their status page is below).

This issue can cause Nylas accounts connected to these mailboxes to abruptly go invalid and require re-authentication to continue. Our system automatically retries the credentials before setting accounts Invalid, but Microsoft's servers are still incorrectly rejecting them at times. This has been occurring sporadically since late January.

Until Microsoft resolves this issue, our recommended work-around is to ensure that the users are authenticating these accounts with App Passwords and re-authenticate when the Nylas account goes Invalid.

More information: https://support.microsoft.com/en-us/office/outlook-and-other-apps-are-unable-to-connect-to-outlook-com-f4202ebf-89c6-4a8a-bec3-3d60cf7deaef

Feb 20, 2024 - 13:09 PST

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Seeing issues that aren't reflected on this page? Contact us at support@nylas.com

Nylas Application Services Operational
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Past Incidents
Feb 25, 2024

No incidents reported today.

Feb 24, 2024

No incidents reported.

Feb 23, 2024

No incidents reported.

Feb 22, 2024

No incidents reported.

Feb 21, 2024

No incidents reported.

Feb 20, 2024

Unresolved incident: Microsoft is reporting authentication issues for Outlook.com users that may impact a small fraction of Nylas users.

Feb 19, 2024
Resolved - We continue to see the impacted customers' errors at normal levels, so we are marking this incident as resolved.
Feb 19, 17:20 PST
Monitoring - As of 9:00 PM UTC, the error rate has returned to normal levels. We have confirmed that this was only impacting a handful of customers using specific "custom IMAP" servers. We are marking this incident as mitigated while we continue to monitor and test.

https://developer.nylas.com/docs/api/supported-providers/

Feb 19, 16:00 PST
Update - We are still engaged with our infrastructure provider to find the root cause and why it is still primarily impacting a single customer. We will continue to post regular updates.
Feb 19, 14:00 PST
Update - We remain in ongoing collaboration with our infrastructure provider, closely keeping tabs on the situation at hand. The issue is currently contained within a specific scope, and our team is diligently working to expedite its resolution.
Feb 19, 13:05 PST
Update - We are still actively collaborating with our infrastructure provider and maintaining vigilant oversight of the ongoing situation. The problem is confined to a specific scope, and our team is dedicated to swiftly addressing and resolving it. Regular updates will be communicated every hour to keep you informed of our progress.
Feb 19, 11:55 PST
Update - We are continuing to work with our infrastructure provider while closely monitoring the situation. While the issue remains limited in scope, we are working to resolve the issue as quickly as possible.
Feb 19, 11:18 PST
Update - We are continuing to work with our infrastructure provider while we monitor the situation. The issue remains limited. We are working to resolve the issue as quickly as possible.
Feb 19, 10:48 PST
Update - We are continuing to work with our infrastructure provider while monitoring the situation closely.
Feb 19, 10:16 PST
Update - After further investigation, this issue appears to be limited to a few customers for now, primarily impacting a single customer. We are continuing to work with our infrastructure provider while monitoring closely.
Feb 19, 09:48 PST
Update - After assessing and eliminating all potential causes from our side, we are waiting to hear back from our infrastructure provider to continue with next steps. We will continue to monitor closely and post updates.
Feb 19, 09:14 PST
Update - We are reaching out to our infrastructure provider to help us get better insights on the current issues.
Feb 19, 08:30 PST
Update - We are continuing to investigate this issue.
Feb 19, 08:09 PST
Investigating - We are seeing an increase in 504 errors with “Unknown connection error” when IMAP accounts are attempting to send messages with the /send API endpoint. We are currently investigating this issue.
Feb 19, 07:43 PST
Feb 18, 2024

No incidents reported.

Feb 17, 2024

No incidents reported.

Feb 16, 2024

No incidents reported.

Feb 15, 2024

No incidents reported.

Feb 14, 2024

No incidents reported.

Feb 13, 2024

No incidents reported.

Feb 12, 2024

No incidents reported.

Feb 11, 2024

No incidents reported.