TCPShield incident

Intermittent Amsterdam issues

Minor Resolved View vendor source →

TCPShield experienced a minor incident on May 11, 2026 affecting Amsterdam, lasting 4h 17m. The incident has been resolved; the full update timeline is below.

Started
May 11, 2026, 08:35 PM UTC
Resolved
May 12, 2026, 12:53 AM UTC
Duration
4h 17m
Detected by Pingoru
May 11, 2026, 08:35 PM UTC

Affected components

Amsterdam

Update timeline

  1. monitoring May 11, 2026, 08:35 PM UTC

    Since 12:59 UTC, we have observed intermittent logouts via our Amseterdam location as a result of very short lived route flaps observed on the backbone. These "flaps" (i.e. temporary route changes) cause TCP sessions to divert to another location for ~500ms. During this window, existing sessions can sometimes reset, as the session state is unknown. We have implemented a fix across all of Europe as of 20:30 UTC and monitoring results.

  2. resolved May 12, 2026, 12:53 AM UTC

    This incident has been resolved.