Cal.com Outage History

Cal.com is up right now

Pingoru has recorded 23 incidents for Cal.com: 13 in the last 12 months and 3 in the last 90 days.

Source: status.cal.com

23incidents recorded
13last 12 months
3last 90 days
12 daystypical duration

Incidents, newest first

Minor October 24, 2026 Identified - Issues with Enterprise SAML Authentication 4h 24m

Started Oct 24, 2026, 04:50 AM UTC· resolved Oct 24, 2026, 09:14 AM UTC

  1. investigating Oct 24, 2026, 04:50 AM UTC

    We are aware of an issue impacting Enterprise SAML logins. Users may be unable to authenticate at this time. We are investigating the root cause and working to resolve it as quickly as possible.

  2. resolved Oct 24, 2026, 09:14 AM UTC

    We have successfully resolved the issue impacting our primary database infrastructure. The root cause was identified as an operational error during infrastructure updates. Data has been fully restored, and all core services are operating normally.

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Minor September 15, 2026 Degraded Service - Cal.com 57m App, API

Started Sep 15, 2026, 06:30 PM UTC· resolved Sep 15, 2026, 07:27 PM UTC

  1. identified Sep 15, 2026, 06:30 PM UTC

    We are currently investigating reports of degraded performance affecting the Cal.com web application

  2. monitoring Sep 15, 2026, 07:08 PM UTC

    We have identified the root cause of the ongoing performance degradation affecting Cal.com. An high-volume query began flooding our system starting at 18:00 UTC, leading to resource contention and slower response times. Our engineering team has successfully reverted the change that introduced the query. We are now observing system metrics stabilize as services recover. Core scheduling and booking flows should progressively return to normal. We will continue to monitor closely and provide a final resolution update shortly.

  3. resolved Sep 15, 2026, 07:27 PM UTC

    Performance metrics have returned to baseline, and booking flows, calendar syncs, and user dashboards are fully functional. Thank you for your patience and understanding while we resolved this issue!

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Major August 31, 2026 Major outage: We resolved an issue impacting the API - https://api.cal.com/ – API

Started Aug 31, 2026, 10:16 AM UTC· resolved Aug 31, 2026, 10:16 AM UTC

  1. resolved Aug 31, 2026, 10:16 AM UTC

    $24

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Major July 21, 2026 Resolved: Partial Outage affecting Cal Atoms Endpoint – API

Started Jul 21, 2026, 08:07 AM UTC· resolved Jul 21, 2026, 08:07 AM UTC

  1. resolved Jul 21, 2026, 08:07 AM UTC

    Incident Update: We resolved an issue impacting the https://api.cal.com/v2/atoms/event-types/){slug}/public endpoint. A database misconfiguration caused requests to fail. Because the endpoint handler was swallowing these errors into standard 404 responses to streamline user experience, the failures were masked in our logs, leading to silent degradation for Cal Atoms users. Action taken: The DB misconfiguration is fixed. We've added active endpoint monitoring, and follow ups include updated pre-deployment checks, and a change to map system failures report to our monitoring tools so they are properly tracked moving forward.

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Minor June 25, 2026 Degraded Service – Gateway Timeouts 27m API

Started Jun 25, 2026, 04:53 PM UTC· resolved Jun 25, 2026, 05:21 PM UTC

  1. investigating Jun 25, 2026, 04:53 PM UTC

    We are currently investigating reports of Gateway timeouts affecting our service. Our team is actively looking into the issue and will provide updates as we learn more.

  2. monitoring Jun 25, 2026, 05:14 PM UTC

    We have implemented a fix for the Gateway timeouts and are now monitoring the service to confirm full recovery. We will provide a further update once we are satisfied the issue has been fully resolved.

  3. resolved Jun 25, 2026, 05:21 PM UTC

    The Gateway timeout issue has been fully resolved. All services are operating normally. We apologize for any inconvenience caused and thank you for your patience.

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Minor June 22, 2026 Delayed Webhooks & Email Notifications — Monitoring 16h 47m App, API

Started Jun 22, 2026, 10:00 PM UTC· resolved Jun 23, 2026, 02:48 PM UTC

  1. identified Jun 22, 2026, 10:00 PM UTC

    We experienced an issue earlier today causing delays in webhook deliveries and email notifications, related to an incident on Trigger.dev's infrastructure. See their incident report here: https://status.trigger.dev/incident/931451?mp=true We are pleased to report that we now have full system recovery — all queued messages have been executed successfully. We are actively monitoring to ensure continued stability.

  2. identified Jun 23, 2026, 02:19 AM UTC

    We want to correct our previous update — our statement that all queued jobs had been replayed successfully was not accurate. We are still actively working to get all queued messages replayed as soon as possible and will provide further updates as we make progress. We apologize for the confusion.

  3. identified Jun 23, 2026, 04:32 AM UTC

    Email and SMS notifications for new and updated bookings are now processing without issue. However, webhooks and previously queued jobs are still pending and have not yet been processed. We are urgently working with our provider to get these resolved as quickly as possible and will continue to provide updates.

  4. identified Jun 23, 2026, 09:14 AM UTC

    We have begun replaying all queued jobs, which will process the backlog of delayed SMS/email notifications and webhooks. We will continue to monitor progress and provide further updates.

  5. monitoring Jun 23, 2026, 11:00 AM UTC

    We have disabled the third-party provider that was causing degraded service. All new bookings and updates to bookings will now correctly trigger SMS/email notifications and webhooks. Previously queued notifications and webhooks are still pending — we are urgently working to get these replayed and will provide further updates as soon as possible.

  6. resolved Jun 23, 2026, 02:48 PM UTC

    For Cal.com, 100% of queued jobs have been successfully replayed. For Cal.eu, a small number of queued jobs are still pending replay — we are urgently working to get these processed and will provide further updates as soon as possible.

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Minor May 17, 2026 Partial outage for cal.com links 4h 32m

Started May 17, 2026, 03:54 AM UTC· resolved May 17, 2026, 08:27 AM UTC

  1. identified May 17, 2026, 03:54 AM UTC

    This is a backdated message for historical purposes and proper reporting. We investigated reports of 403 Forbidden responses being received from cal.com links.

  2. resolved May 17, 2026, 08:27 AM UTC

    We identified the issue where our firewall was blocking requests coming from certain edge servers. We have resolved the issue.

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Minor April 15, 2026 Delayed webhook delivery –

Started Apr 15, 2026, 03:12 PM UTC· resolved Apr 15, 2026, 03:12 PM UTC

  1. resolved Apr 15, 2026, 03:12 PM UTC

    One of our providers is dealing with DNS resolution issues in us-east-1, causing our systems to delay sending webhooks. We are working closely with them to get a resolution ASAP.

  2. resolved Apr 15, 2026, 04:22 PM UTC

    The delays for webhook deliveries have been fixed.

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Minor April 6, 2026 Intermittent issues loading data on app.cal.com dashboard 28m

Started Apr 06, 2026, 11:54 AM UTC· resolved Apr 06, 2026, 12:22 PM UTC

  1. investigating Apr 06, 2026, 11:54 AM UTC

    We are investigating an issue where an error is being shown claiming a commercial license is needed.

  2. monitoring Apr 06, 2026, 12:13 PM UTC

    We've identified the issue and have deployed a fix. We are actively monitoring to ensure the errors stop.

  3. resolved Apr 06, 2026, 12:22 PM UTC

    We have confirmed the issue is resolved.

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Minor March 7, 2026 Degraded service for creating bookings via API v2 15m

Started Mar 07, 2026, 03:48 AM UTC· resolved Mar 07, 2026, 04:03 AM UTC

  1. investigating Mar 07, 2026, 03:48 AM UTC

    We are seeing 502 Bad Gateway errors on the api.cal.com/v2/bookings endpoint for POST.

  2. resolved Mar 07, 2026, 04:03 AM UTC

    We identified and resolved the issue. Apologies for the disruption.

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Minor February 12, 2026 We are currently experiencing problems with our email provider 5d 11h

Started Feb 12, 2026, 03:33 PM UTC· resolved Feb 18, 2026, 03:31 AM UTC

  1. investigating Feb 12, 2026, 03:33 PM UTC

    All emails being sent from Cal are currently not being delivered to inboxes. We are working with our email provider on resolving this issue and to send all queued emails during this time. There is no impact on scheduling bookings.

  2. identified Feb 12, 2026, 04:58 PM UTC

    Emails are being sent via an alternate provider until our primary provider has recovered and resumed operations.

  3. monitoring Feb 12, 2026, 10:04 PM UTC

    Queued emails from our primary email provider are now being sent. We are still using a secondary email provider to send emails as we continue to monitor the situation. Note: Late booking reminder workflow emails may be sent as part of the queued emails.

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Minor January 27, 2026 Degraded database performance 21d 11h

Started Jan 27, 2026, 04:18 PM UTC· resolved Feb 18, 2026, 03:31 AM UTC

  1. investigating Jan 27, 2026, 04:18 PM UTC

    A large spike in our database is causing degraded performance. We are urgently investigating.

  2. monitoring Jan 27, 2026, 06:06 PM UTC

    We have reverted a change that was causing extra load from all logged in users of the Cal.com app. The system is stabilizing and we are actively monitoring.

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Minor November 18, 2025 Our upstream provider Cloudflare is experiencing Global Network Issues that are affecting Cal.com 91d 15h

Started Nov 18, 2025, 12:01 PM UTC· resolved Feb 18, 2026, 03:31 AM UTC

  1. monitoring Nov 18, 2025, 12:01 PM UTC

    We are actively monitoring https://www.cloudflarestatus.com/incidents/8gmgl950y3h7 for updates.

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Minor August 20, 2025 We are experiencing a major degradation of service across the app 17m

Started Aug 20, 2025, 04:47 PM UTC· resolved Aug 20, 2025, 05:04 PM UTC

  1. investigating Aug 20, 2025, 04:47 PM UTC

  2. identified Aug 20, 2025, 04:54 PM UTC

    One of our downstream providers has informed us they are fixing an issue and it will be addressed within the next few minutes.

  3. resolved Aug 20, 2025, 05:04 PM UTC

    Our downstream provided resolved the issue triggering this. Service has been restored.

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Minor June 20, 2025 We are experiencing some downtime due to database issues. 57m

Started Jun 20, 2025, 12:44 PM UTC· resolved Jun 20, 2025, 01:41 PM UTC

  1. investigating Jun 20, 2025, 12:44 PM UTC

    We large spike in traffic has caused stress on our database. We are investigating urgently.

  2. monitoring Jun 20, 2025, 01:14 PM UTC

    We have found the root cause and have a fix in place. We will continue to monitor to ensure all systems are back.

  3. resolved Jun 20, 2025, 01:41 PM UTC

    Systems are back to normal.

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Minor June 11, 2025 Some requests to Google Calendar failing 56m

Started Jun 11, 2025, 02:28 PM UTC· resolved Jun 11, 2025, 03:24 PM UTC

  1. investigating Jun 11, 2025, 02:28 PM UTC

    We are seeing a small % of failing requests to modify calendar events on Google Calendar.

  2. monitoring Jun 11, 2025, 02:41 PM UTC

    We identified what was causing requests to Google Calendar to fail and are monitoring to verify systems are back to normal.

  3. resolved Jun 11, 2025, 03:24 PM UTC

    We have confirmed the fix brings systems back to normal.

  4. investigating Jun 23, 2025, 02:13 PM UTC

    We are again seeing some calls to Google Calendar APIs failing which will impact events being created and removed. We are urgently investigating.

  5. resolved Jun 23, 2025, 03:30 PM UTC

    This has been resolved. Service is back to normal.

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Minor April 23, 2025 Database issues causing 500s 4h 25m

Started Apr 23, 2025, 12:26 PM UTC· resolved Apr 23, 2025, 04:52 PM UTC

  1. identified Apr 23, 2025, 12:26 PM UTC

    We are seeing 500s happening on both the web app and API due to a database overload issue. We are actively investigating and will provide updates as soon as possible.

  2. resolved Apr 23, 2025, 04:52 PM UTC

    We have found and fixed the root cause of these issues.

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Minor March 24, 2025 Brief Booking Page downtime (404 Error) –

Started Mar 24, 2025, 02:00 AM UTC· resolved Mar 24, 2025, 02:00 AM UTC

  1. resolved Mar 24, 2025, 02:00 AM UTC

    Due to a faulty deployment, for a brief moment at 11pm EST the booking pages returned a 404 error for about 15 minutes. This was quickly resolved.

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Minor February 18, 2025 DDOS Database error (code 500) –

Started Feb 18, 2025, 03:21 PM UTC· resolved Feb 18, 2025, 03:21 PM UTC

  1. resolved Feb 18, 2025, 03:21 PM UTC

    We got hit by an uncaught DDOS which temporarily broke the application and threw a 500 error and experienced a downtime of 2 minutes.

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Minor February 4, 2025 Emails not being sent. –

Started Feb 04, 2025, 12:50 PM UTC· resolved Feb 04, 2025, 12:50 PM UTC

  1. resolved Feb 04, 2025, 12:50 PM UTC

    Emails are currently not being sent due to a false positive restriction in our Twilio Sendgrid account. The restriction is being lifted.

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