SAML Single Sign-On (SSO) errors

highVercelJul 16, 2026 08:39Duration: 2h 6m

authentication

Authentication Issue

Summary

This incident has been resolved.

Impact

major

Timeline

Jul 16, 2026 08:39

[investigating] 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.

via statuspage

+1h 44m

Jul 16, 2026 10:23

[monitoring] 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.

via statuspage

+22m

Jul 16, 2026 10:45

[resolved] This incident has been resolved.

via statuspage

Lessons Learned

⚠Vercel has experienced 45 incidents in the past year. This frequency suggests systemic reliability challenges that may warrant additional monitoring.

📊Incidents related to authentication have occurred 131 times across all providers in the past year. This is one of the most common failure categories in cloud infrastructure.

💡This incident is categorized as: Authentication Issue. Consider implementing preventive measures specific to this failure category.