Enterprise SSO sign-in failures Enterprise SSO sign-in failures are occurring for Claude, with users being offered email and SMS notifications for incident updates. The issue affects authentication services for the AI platform. Subscribe to updates for Enterprise SSO sign-in failures via email and/or text message. You'll receive email notifications when incidents are updated, and text message notifications whenever Claude creates or resolves an incident. To receive SMS updates, please verify your number. To proceed with just email click ‘Subscribe’