Cloudflare experienced a significant outage on November 18, 2025, around 6:00 am ET, disrupting a large portion of the global web and causing widespread "500 errors" and internal server issues. Major platforms such as X, OpenAI's ChatGPT, and Canva were rendered inoperable, along with popular online games like League of Legends. Cloudflare stated it was investigating the issue impacting multiple customers but did not provide a specific explanation. There was scheduled maintenance at its Santiago data center on the same day from 12:00 to 15:00 UTC. While some recovery was reported in the UK, users in the US continued to face error messages.