Cronofy Status Page

May 14, 2026 · resolved May 14

Between 03:08 UTC and 03:10 UTC we observed increased API error rates in our US data center. During this time, customers may have received 500 Internal Server Error responses. Since that time, error rates have returned to normal levels. These errors were caused by a read-only database server going through an automated recovery process.

Mar 13, 2026 · resolved Mar 13

Google has closed their incident and we've seen error rates remain low so are likewise marking this as resolved now.

Feb 27, 2026 · resolved Feb 27

On Friday February 27th 2026 at 12:28 UTC, a change was released to our production environment that caused a bug preventing events using Microsoft Integrated conferencing from being synced to calendars. At 16:05 UTC, a change was released to fix the issue and full functionality was restored. By 17:35 UTC, all previously impacted events had been successfully retried and synced and the incident was closed. In total, we identified 2,254 events that had been affected by this bug, all of which have now been successfully synced. We always ask the questions: * Could the issue have been identified sooner? * Could the issue have been resolved sooner? * Could the issue have been prevented? In this instance, the issue could and should have been identified by us earlier. The change that introduced this bug was released at 12:28 UTC, but we only became aware of the issue when a customer reported issues to us at 15:27 UTC. We never want to rely on customers having to tell us about issues in our platform before we are aware, so this is an instance where gaps in our system monitoring meant the issue went undetected for too long. We deployed a fix for this issue at 16:05 UTC, which was 37 minutes after the bug report email was sent, and 13 minutes after we identified the extent of the issue and opened an incident at 15:52 UTC. Therefore, we don’t believe the bug could’ve been resolved any sooner, as we acted quickly to release a fix once we were fully aware of the problem. Along with a gap in our alerting, the bug should have been prevented through automated testing, which would’ve flagged the issue before the initial change was deployed at 12:28 UTC. In this instance, our testing failed to check the logic down the path that Microsoft Teams integrated conferencing followed, because a check had been mocked instead of being integration tested, leading to a blind spot. We have addressed this and are reviewing where we have used test mocks which could hide integration issues. Actions: * Further guidelines around coding principles to be provided to our Engineering team regarding our approach to automated testing * Improve our system monitoring to provide specific alerting around this particular area

Feb 17, 2026 · resolved Feb 17

We have released version 0.22.25 of the Cronofy Chrome extension, fixing the issue. If you have any problems, please first check that both Google Chrome and the Cronofy Chrome extension are up to date. If you have any additional issues then please contact [email protected].

Feb 13, 2026 · resolved Feb 13

Between 12:52 and 12:55 we saw that calls to our API encountered a higher level of 500 Server Error responses than usual We have investigated this and it appears to relate to a period where we saw a large spike in traffic, a rapid drop and another spike in quick succession resulting in some temporary 500 errors. This is now resolved but we will continue monitoring for any further issues.