# SAML SSO requests failing

- Provider: [Stytch](https://down.guide/stytch)
- Level: confirmed
- Impact: Partial outage
- lasted 0m
- started 2025-10-20 16:29 UTC
- Test API, Live API, Javascript SDK
- id: DWN-c1abb035bb
- Official page: https://status.stytch.com/incident/cmgzdn6k903jgjzg6u94ljjdh

## Updates from Stytch
### 2025-10-20 16:29 UTC: resolved
Type: Incident
 Duration: 1 hour and 12 minutes
 Affected Components: Test API, Live API, Javascript SDK
 Oct 21, 21:27:25 GMT+0 - Postmortem - \*\*Issue\*\*
All SAML SSO Logins failed in the Stytch Platform.
\*\*Timeline\*\*
October 20th, 2025
16:30 - 18:01 UTC
\*\*Cause\*\*
A widespread outage in AWS created a knock-on effect that uncovered a latent certificate management issue within the Stytch SSO service. Other Stytch services, like the core Authentication API, responded appropriately in the face of downtime and continued to operate as expected. The result was that all SAML SSO login attempts during this incident returned an invalid certificate error and prevented users from logging in.
\*\*Remediation\*\*
Stytch updated the SSO service to handle certificate management so that it aligns with our other services that did not error. This reconfiguration will prevent this error from recurring in the event of AWS failure again in the future. Oct 20, 18:01:00 GMT+0 - Resolved - This incident has been resolved. Oct 20, 16:29:00 GMT+0 - Investigating - SAML SSO requests are currently failing as a downstream affect of the AWS outage. We're currently investigating ways to mitigate the issue.

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