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Cloudflare Outage History

Every past Cloudflare outage tracked by IsDown, with detection times, duration, and resolution details.

There were 3144 Cloudflare outages since March 2020. The 735 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor May 11, 2026

May 2026: Increased HTTP 4xx and 502 Errors in Perth

Detected May 11, 2026 11:24 PM EDT · Resolved May 12, 2026 12:54 AM EDT · Duration about 2 hours

Cloudflare experienced network connectivity issues in Perth that caused increased HTTP 4xx and 502 errors for sites and services in the region. The incident affected Cloudflare's network infrastructure and lasted approximately 1.5 hours. Cloudflare identified the problem and implemented a mitigation to restore services.

Minor May 11, 2026

May 2026: Issues passing Challenge Pages in China

Detected May 11, 2026 1:33 AM EDT · Resolved May 11, 2026 8:12 AM EDT · Duration about 7 hours

Cloudflare experienced issues with challenge pages in China, where users encountered errors after successfully completing the challenges. The incident affected users' ability to access websites protected by Cloudflare's security features in the China region. The problem was resolved within 9 minutes of investigation beginning.

Minor May 9, 2026

May 2026: Network Performance Issues

Detected May 9, 2026 11:28 PM EDT · Resolved May 10, 2026 4:24 AM EDT · Duration about 5 hours

Cloudflare experienced network performance issues affecting their Chicago data center (ORD) in North America for 4.9 hours. The issue was identified and a fix was implemented, with the service moving to monitoring status. The incident impacted network performance for users routing through the Chicago location.

Minor May 8, 2026

May 2026: Certificate Issuance through Let's Encrypt unavailable

Detected May 8, 2026 3:46 PM EDT · Resolved May 8, 2026 5:01 PM EDT · Duration about 1 hour

Cloudflare experienced an issue with certificate issuance through Let's Encrypt that affected customers using Universal SSL, Advanced Certificate Manager, or Cloudflare for SaaS, causing delays or failures when issuing or renewing certificates. Certificates from other Certificate Authorities like Google Trust Services and existing certificates remained unaffected. The issue was resolved after 1.3 hours with Cloudflare confirming recovery and continuing to monitor the service.

Minor May 8, 2026

May 2026: Wrangler users may experience frequent log out

Detected May 8, 2026 6:35 AM EDT · Resolved May 8, 2026 10:00 AM EDT · Duration about 3 hours

Cloudflare experienced an issue where Wrangler users were being logged out frequently, affecting Cloudflare Sites and Services and the Wrangler platform. The incident lasted 3.4 hours before a fix was implemented and monitoring began.

Minor May 7, 2026

May 2026: Cloudflare DNS Resolver 1.1.1.1 Website

Detected May 7, 2026 4:49 AM EDT · Resolved May 7, 2026 6:16 AM EDT · Duration about 1 hour

Cloudflare experienced an issue that prevented users from accessing the 1.1.1.1 website for 1.5 hours. The incident affected Cloudflare Sites and Services as well as Recursive DNS components. The issue was identified and investigated, with service restored after the duration period.

Minor May 6, 2026

May 2026: Cloudflare One Client Connectivity Issue in Chicago (ORD) area

Detected May 6, 2026 6:28 PM EDT · Resolved May 6, 2026 9:10 PM EDT · Duration about 3 hours

Cloudflare experienced connectivity issues with their One service affecting users connecting through the Chicago datacenter, causing degraded internet performance and connection problems. The incident impacted Cloudflare Sites and Services along with their WARP client over a 2.7-hour period. A fix was implemented and the service was restored to normal operation.

Minor May 6, 2026

May 2026: Cloudflare One Dashboard Analytics Intermittently Not Loading

Detected May 6, 2026 5:13 PM EDT · Resolved May 6, 2026 6:58 PM EDT · Duration about 2 hours

Cloudflare experienced intermittent loading issues with Access and Gateway Analytics in the Cloudflare One dashboard for 1.7 hours. This was a display-only problem affecting the rendering of rollup analytics, while data collection and the underlying analytics functionality continued operating normally. The incident impacted the Sites and Services and Analytics components.

Minor May 6, 2026

May 2026: Cloudflare Dashboard Workers Editor Unavailable

Detected May 6, 2026 12:26 PM EDT · Resolved May 6, 2026 12:57 PM EDT · Duration 32 minutes

Cloudflare experienced an issue with the Workers Editor in their dashboard that prevented users from accessing this web-based code editing interface for 32 minutes. The incident affected Cloudflare Sites and Services and Workers components, though customers could still deploy and update Worker code through alternative methods like Wrangler, Terraform, or the API. A fix was implemented and the service was restored to normal operation.

Minor May 5, 2026

May 2026: Workers API Issue

Detected May 5, 2026 9:08 PM EDT · Resolved May 5, 2026 9:40 PM EDT · Duration 31 minutes

Cloudflare experienced Worker API failures that prevented customers from using the Worker API, though existing production Workers continued running normally. The issue affected Cloudflare Sites and Services, Workers, and Workers Builds components. A fix was implemented and monitoring began after 31 minutes of service disruption.