Checkmk SaaS - Notice history

All systems operational

Admin Panel - Operational

100% - uptime
Oct 2025 · 100.0%Nov · 100.0%Dec · 100.0%

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Oct 2025
Nov 2025
Dec 2025

Checkmk Sites hosted in the EU - Operational

100% - uptime
Oct 2025 · 100.0%Nov · 99.90%Dec · 100.0%

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Oct 2025
Nov 2025
Dec 2025

Checkmk Sites hosted in the US - Operational

100% - uptime
Oct 2025 · 100.0%Nov · 99.90%Dec · 100.0%

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Oct 2025
Nov 2025
Dec 2025

Notice history

Dec 2025

Scheduled system maintenance to enhance system performance, reliability, and security of Checkmk Cloud
  • Completed
    December 01, 2025 at 8:29 AM
    Completed
    December 01, 2025 at 8:29 AM
    Maintenance has completed successfully.
  • In progress
    December 01, 2025 at 6:00 AM
    In progress
    December 01, 2025 at 6:00 AM
    Maintenance is now in progress
  • Planned
    December 01, 2025 at 6:00 AM
    Planned
    December 01, 2025 at 6:00 AM

    Maintenance Window: 4 hours
    Expected Downtime for Client Sites: Minimal (less than 20 minutes)
    Impact: During the downtime you will not be able to reach your site, nor will the site be able to receive metrics/connections from Checkmk agents. We appreciate your understanding and cooperation as we work to improve your experience. Should you encounter any issues during or after the maintenance period, please contact our support team through the Support Portal.

Nov 2025

We are investigating authentication issues with Checkmk SaaS Sites
  • Resolved
    Resolved
    This incident has been resolved.
  • Monitoring
    Monitoring
    We implemented a fix and are currently monitoring the result.
  • Investigating
    Investigating
    We are currently investigating this incident.

Oct 2025

System maintenance
  • Completed
    November 02, 2025 at 12:00 PM
    Completed
    November 02, 2025 at 12:00 PM
    Maintenance has completed successfully
  • In progress
    October 31, 2025 at 3:00 PM
    In progress
    October 31, 2025 at 3:00 PM
    Maintenance is now in progress
  • Planned
    October 31, 2025 at 3:00 PM
    Planned
    October 31, 2025 at 3:00 PM

    During this period, license activation and creating new licensed sites will be unavailable.
    Service will be fully restored once maintenance is completed.

Checkmk sites cannot be created in the US
  • Resolved
    Resolved

    This incident has been resolved. Dependent AWS services have fully recovered.

  • Update
    Update

    Email notifications are fully recovered, however the creation of new Checkmk sites in the US region is still impaired.

  • Update
    Update

    Email notifications for Checkmk sites hosted in the US have started to experience issues. We are monitoring the developments closely.

  • Update
    Update

    All email notifications have been re-queued, checkmk site creation is still in the process of recovering.

  • Monitoring
    Monitoring

    Most impacted AWS operations are recovering, we are monitoring the process.

  • Identified
    Identified

    Due to an AWS STS outage in the US region, checkmk sites cannot be created in the US and email notifications from the US region are not being forwarded. We are keeping a close watch on any AWS updates on the issue.

Upgrade to Admin Panel Email Gateway
  • Completed
    October 14, 2025 at 7:00 AM
    Completed
    October 14, 2025 at 7:00 AM
    Maintenance is now in progress
  • In progress
    October 14, 2025 at 5:00 AM
    In progress
    October 14, 2025 at 5:00 AM
    Maintenance is now in progress
  • Planned
    October 14, 2025 at 5:00 AM
    Planned
    October 14, 2025 at 5:00 AM

    What: we are upgrading our Admin Panel Email Gateway

    Downtime: no downtime for our existing service

    Impact: Everything will continue to work as usual except for email confirmation for new account sign-ups or password resets. During the maintenance window, new users will not be able to receive the activation code needed to complete registration or the password reset email.

Oct 2025 to Dec 2025

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