Resolved · lasted 2 h

Cloudflare outage on August 31

Reports for Cloudflare jumped to 103 an hour and stayed high for 2 h.

Started
4:00 PM
August 31, 2026 · UTC
Back to normal
6:00 PM
2 h later
Peak
103/hr
3× normal
Cloudflare’s incident
72 h 46 min
HTTP/3 issue affecting R2 custom domains

Reports during the outage

2:00 PM7:50 PM UTC

What Cloudflare said

www.cloudflarestatus.com
Resolved8/31/2026, 6:47 PM – 9/3/2026, 7:32 PM · 72 h 46 min

HTTP/3 issue affecting R2 custom domains

  1. Resolved · 7:32 PM

    This incident has been resolved.

  2. Monitoring · 3:14 PM

    A fix has been implemented and we are monitoring the results.

  3. Identified · 2:46 PM

    The issue has been identified and a fix is being implemented.

  4. Investigating · 6:47 PM

    Some Firefox users may see delayed or failed asset loads on R2 custom domains due to an incorrect HTTP/3 advertisement. We are working on a fix.

Cloudflare posted its first update 2 h 47 min after reports started rising.

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