Harness outage, 14 September 2026
MTLS Outage with Delegates
- Started
- Resolved
- 15 Sept 2026, 03:28 UTC (after 8 h 27 min)
- Impact
- Critical
- Affected
- Continuous Delivery - Next Generation (CDNG)
Last update from Harness
# **Summary** To improve the security posture, On September 14, 2026, Harness performed a scheduled rotation of the TLS certificate used to secure Delegate connections for accounts using mutual TLS \(mTLS\),The replacement certificate passed Harness's existing pre-deployment validation and smoke testing. However, the rotation also introduced a change in certificate authority, which required additional certificate-chain and gateway configuration this prevented affected Delegates from connecting to Harness. Harness has identified the contributing factors and is implementing the corrective actions described below to prevent a recurrence. # **Impact** Delegates configured to use...
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