Changes / Vercel / SAML Single Sign-On (SSO) errors
Vercel: Major incident: SAML Single Sign-On (SSO) errors
Summary
Vercel reported a major SAML Single Sign-On outage preventing SAML/SSO login and access to SSO-protected teams through the dashboard and CLI. It started at 2026-07-16 08:39 UTC and resolved at 2026-07-16 10:45 UTC, lasting 2 h 5 min. Vercel identified the root cause and implemented a fix but did not specify either.
Machine-written from the diff below (Sol; type: incident outage). Check the diff before relying on it.
What changed
Before: not present
After: SAML Single Sign-On (SSO) errors
Before: not present
After: major
Before: not present
After: resolved
Before: not present
After: 2026-07-16 08:39 UTC
Before: not present
After: 2026-07-16 10:45 UTC
Before: not present
After: SAML Single Sign-On
Before: not present
After: We are investigating SAML Single Sign-On (SSO) errors, leading to inability to login using SAML/SSO or access SSO-protected teams through the Vercel dashboard and CLI.
Before: not present
After: The root cause of the SAML Single Sign-On (SSO) errors has been identified and a fix has been implemented. We are seeing error rates decrease. Users should be able to login with SAML/SSO or access their SSO-protected teams through the Vercel dashboard and CLI again. We are continuing to monitor.
Before: not present
After: This incident has been resolved.
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History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Major incident: SAML Single Sign-On (SSO) errors (this change) Vercel reported a major SAML Single Sign-On outage preventing SAML/SSO login and access to SSO-protected teams through the dashboard and CLI. It started at 2026-07-16 08:39 UTC and resolved at 2026-07-16 10:45 UTC, lasting 2 h 5 min. Vercel identified the root cause and implemented a fix but did not specify either. | Major incident |