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Semaphore Outage History

Every past Semaphore outage tracked by IsDown, with detection times, duration, and resolution details.

There were 240 Semaphore outages since October 2018. The 36 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor March 12, 2026

March 2026: Delays in job processing

Detected Mar 12, 2026 11:55 AM EDT · Resolved Mar 12, 2026 1:52 PM EDT · Duration about 2 hours

Semaphore 2.0 experienced delays in job processing for 2 hours. The issue was identified and a fix was implemented, with monitoring confirming the resolution. The incident has been fully resolved.

Minor March 11, 2026

March 2026: Delays in job processing

Detected Mar 11, 2026 12:28 PM EDT · Resolved Mar 11, 2026 1:43 PM EDT · Duration about 1 hour

Semaphore 2.0 experienced delays in job processing for 1.3 hours. The issue was identified and a fix was implemented, with the service returning to normal operation. The incident was resolved after monitoring confirmed the fix was successful.

Minor March 8, 2026

March 2026: Delays in job processing

Detected Mar 8, 2026 11:21 AM EDT · Resolved Mar 8, 2026 3:03 PM EDT · Duration about 4 hours

Semaphore 2.0 experienced delays in job processing for 3.6 hours. The issue was identified and a fix was implemented, with monitoring confirming the resolution. The incident has been fully resolved.

Minor March 3, 2026

March 2026: Delays in job processing

Detected Mar 3, 2026 12:06 PM EST · Resolved Mar 3, 2026 1:06 PM EST · Duration about 1 hour

Semaphore 2.0 experienced delays in job processing for approximately 1 hour. The issue was identified and a fix was implemented, with the service team monitoring the results. The incident was fully resolved after the fix proved effective.

Major February 24, 2026

February 2026: Jobs Not Starting and Processing Delays

Detected Feb 24, 2026 3:49 AM EST · Resolved Feb 24, 2026 5:32 AM EST · Duration about 2 hours

Semaphore 2.0 experienced a major incident where jobs failed to start and processing delays occurred for 1.7 hours. The issue was identified and a fix was implemented, with the service returning to normal operation. The incident was fully resolved after monitoring confirmed the fix was successful.