What visitors reported during this incident

No visitor reports were filed for this incident.

Having problems with Calendly now? Check the current status

Updates (5)

Apr 15, 2026, 03:21 PM
Outlook 365 Login Issues
Microsoft engineering teams have identified a DNS issue and have failed over to an alternative DNS provider. The login issues with the Calendly platform appear to be fixed. We are monitoring closely and will provide any further updates as necessary.
Calendly ↗
Apr 15, 2026, 03:21 PM
Outlook 365 Login Issues
DNS issues affecting logins using the Outlook 365 service appear to have been resolved. If you experience any further issues, please reach out to [email protected]
Calendly ↗
Apr 15, 2026, 03:21 PM
Outlook 365 Login Issues
We have identified an issue with logins affecting customers using Microsoft's Azure Active Directory service. This can affect users that have signed up for Calendly using the Outlook 365 service and prevent them from logging into the application. Our team has identified a fix and is working on resolving the issue.
Calendly ↗
Apr 15, 2026, 03:21 PM
Outlook 365 Login Issues
The root cause of this issue appears to be an outage in Microsoft's Azure cloud services. We will provide updates as we receive them.
Calendly ↗
Apr 15, 2026, 03:21 PM
Outlook 365 Login Issues
The issue appears to only affect a small subset of users and is intermittent in nature. If you experience problems logging in, please refresh and try again.
Calendly ↗

What to do next

Verify your own services recovered cleanly. Some upstream outages leave queues or caches in a degraded state, run smoke tests before declaring green internally.
Save the post-mortem. Vendors usually publish a detailed RCA 1-3 days later. We'll add it to this page when it appears.
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