OpenAI ChatGPT Outage History

ChatGPT 5.4 Pro experienced high error rates affecting both the ChatGPT service and web interface for 24 minutes on March 17, 2026. The incident was classified as minor and the team investigated the issue with the affected services. The service was restored after the 24-minute outage period.

ChatGPT users experienced elevated errors when attempting to sign in or create new accounts for 1.1 hours. The issue affected the login system and ChatGPT service access. The problem was identified and resolved through a mitigation that was applied and monitored for recovery.

ChatGPT free and guest plan users experienced elevated errors for 2.4 hours, affecting the web interface. The service provider identified the issue, implemented a mitigation, and monitored the recovery process.

ChatGPT experienced a high rate of conversation errors specifically affecting logged out users on the web platform for 1.3 hours. The issue impacted users' ability to have successful conversations with ChatGPT when not signed into their accounts. The service team applied a mitigation and monitored the recovery to resolve the problem.

ChatGPT experienced a 4.4-hour login issue where some users encountered "No Accessible Workspaces" errors when attempting to sign in via SSO. The incident affected both ChatGPT service access and the login system. The issue was identified, mitigated, and resolved with ongoing monitoring to ensure full recovery.

ChatGPT experienced elevated login errors that prevented users from accessing the service and its APIs, including Sora functionality. The incident lasted 32 minutes, during which the team identified the login issues and worked on implementing a mitigation. The problem was resolved after the mitigation was successfully deployed.

ChatGPT experienced elevated conversation errors affecting some users for 1.9 hours, with users reporting issues uploading PDF files that would stall and require repeated file loading attempts. The service team identified the problem and implemented a mitigation to resolve the errors. Both ChatGPT and web components were impacted during the incident.

ChatGPT's Deep Research feature experienced elevated error rates affecting Enterprise users for 2.1 hours. Users reported persistent loading screens on mobile apps and issues with PDF file uploads that would stall and require reloading. The service team applied a mitigation and monitored the recovery to resolve the issue.

ChatGPT users experienced increased errors when attempting to upload files, with the issue persisting for 26.9 hours. The problem particularly affected EU workspaces, which continued experiencing difficulties even after initial mitigations were applied. The service team implemented multiple mitigations throughout the incident period to resolve the file upload functionality.

ChatGPT's Deep Research feature experienced elevated errors specifically affecting users in the LATAM region for 6.6 hours. The issue impacted both ChatGPT and Deep Research components, preventing users from successfully completing deep research requests. The problem was identified and a mitigation was applied, with the service being monitored for recovery.