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Cloudflare outage causes error messages across the internet

2025-11-18 15:28 by
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Web services provider Cloudflare got hit by an outage on Tuesday, disrupting access to many websites and services including OpenAI, Spotify, X, Grindr, Letterboxd and Canva.

Cloudflare is a cloud services and cybersecurity company based in San Francisco that is used by approximately 20% of all websites, according to W3Techs. It's one of a handful of services, along with Amazon Web Services, CrowdStrike and Fastly (all of which have experienced major outages in the past few years) that you might never have heard of, but that provide essential internet infrastructure.

The bulk of sites and services impacted by Tuesday's outage, which began around 3.30 a.m. PT, seemed to recover within three hours of Cloudflare going down. It's likely that some continue to be affected, and may still experience difficulties throughout the day. 

A Cloudflare spokesperson said the "root cause" of the outage was an automatically generated configuration file used to manage threat traffic that "grew beyond an expected size of entries," which triggered a crash in the software system that handles traffic for several of its services. The company said it began to observe a "spike in unusual traffic" around 5:20 a.m. ET. There's no evidence that the outage was a result of an attack or caused by malicious activity, the spokesperson added.

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