Harness outage, 5 October 2026

Hosted MCP Logins W/ SSO Failing

Started
Resolved
6 Oct 2026, 00:39 UTC (after 2 h 37 min)
Impact
Minor
Affected
Platform

Last update from Harness

## Okta Application SP-Initiated SSO Login Failures ‌ # Summary ‌ Between October 5, 2026, 18:18 UTC and October 6, 2026, 00:26 UTC, some Harness customers were unable to sign in to the Harness Hosted MCP server via SAML Single Sign-On \(SSO\). The main Harness Portal user authentication remained fully operational. Affected users saw login errors or were redirected to an invalid SSO page instead of completing sign-in. ‌ The issue was caused by breaking changes in a version upgrade of the Harness identity service HarnessID. We fixed it with a series of hotfixes, and SSO login was fully restored for all affected customers. ‌ # Impact ‌ Users signing in to Harness MCP via SAML SSO wer...

9 Oct 2026, 16:17 UTC

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Other Harness incidents

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  2. Degraded performance in UI execution graph in prod3

  3. Prod1: Intermittent issue with IACM stages in some pipelines

  4. Harness CI Cloud build issues when accessing Maven Central

  5. Prod1: IACM Stages are failing and pipelines are intermittently failing to start.

  6. Prod2 Pipelines with verify step failing intermittently

  7. Single Customer: IaCM pipeline executions failing intermittently in Prod 1

  8. SSO login failures for the published Harness Okta application

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