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FatTail Outage History

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

There were 44 FatTail outages since January 2021. The 10 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor April 13, 2026

April 2026: AdBook+ System Performance - adbook02.fattail.com only

Detected Apr 13, 2026 10:13 AM EDT · Resolved Apr 14, 2026 7:06 AM EDT · Duration about 21 hours

Minor February 3, 2026

February 2026: AdBook+ System Performance

Detected Feb 3, 2026 10:49 AM EST · Resolved Feb 4, 2026 7:13 PM EST · Duration 1 day

Minor January 30, 2026

January 2026: AdBook+ System Performance

Detected Jan 30, 2026 12:42 PM EST · Resolved Feb 5, 2026 1:00 PM EST · Duration 6 days

Minor January 26, 2026

January 2026: AdBook+ System Performance

Detected Jan 26, 2026 11:05 AM EST · Resolved Feb 2, 2026 1:56 PM EST · Duration 7 days

Minor December 18, 2025

December 2025: AdBook+ System Performance

Detected Dec 18, 2025 4:06 PM EST · Resolved Dec 19, 2025 8:48 AM EST · Duration about 17 hours

Minor September 29, 2025

September 2025: AdBook+ System Performance | Affecting adbook03.fattail.com

Detected Sep 29, 2025 11:32 AM EDT · Resolved Oct 1, 2025 9:22 AM EDT · Duration 2 days

Minor July 27, 2025

July 2025: AdBookOMS single-sign on access issue

Detected Jul 27, 2025 11:31 PM EDT · Resolved Jul 28, 2025 3:42 AM EDT · Duration about 4 hours

Minor June 9, 2025

June 2025: AdBook+ Latency

Detected Jun 9, 2025 11:57 AM EDT · Resolved Jun 25, 2025 8:55 AM EDT · Duration 16 days

Minor June 5, 2025

June 2025: AdBook+ Latency

Detected Jun 5, 2025 12:34 PM EDT · Resolved Jun 5, 2025 5:21 PM EDT · Duration about 5 hours

Minor April 27, 2025

April 2025: Issue with 'EditIO' and 'EditDrop' Links in AdBook+ OMS Email Notifications

Detected Apr 27, 2025 1:37 PM EDT · Resolved Jul 14, 2025 10:36 AM EDT · Duration 3 months