Tableau Cloud incident

A recent security update for Common Runtime applications in the EU region may have unintentionally enforced a stricter policy for TLS certificates used for app default domain TLS termination (<app>.h

Minor Resolved View vendor source →

Tableau Cloud experienced a minor incident on August 25, 2026 affecting HEROKUEUROPE, lasting 1h 8m. The incident has been resolved; the full update timeline is below.

Started
Aug 25, 2026, 03:01 PM UTC
Resolved
Aug 25, 2026, 04:10 PM UTC
Duration
1h 8m
Detected by Pingoru
Aug 25, 2026, 03:01 PM UTC

Affected components

HEROKUEUROPE

Update timeline

  1. identified Aug 25, 2026, 03:01 PM UTC

    Degradation Started: herokuServiceDegradation

  2. monitoring Aug 25, 2026, 03:40 PM UTC

    A recent security update for Common Runtime applications in the EU region may have unintentionally enforced a stricter policy for TLS certificates used for app default domain TLS termination ( .herokuapp.com). This caused some clients to experience TLS handshake failures and to be unable to connect to apps. Engineers have identified the issue and we are working on remediating.