Outage in Cloudflare

R2 elevated errors during CompleteMultipart operations

Resolved Minor
July 02, 2025 - Started about 15 hours ago - Lasted about 3 hours
Official incident page

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Outage Details

Cloudflare has observed an increase in HTTP 500 responses on some CompleteMultipart API requests containing parts uploaded between 21:03 and 21:26 UTC. We are working to analyze and mitigate this problem. More updates to follow shortly.
Components affected
Cloudflare Sites and Services Cloudflare R2
Latest Updates ( sorted recent to last )
MONITORING about 12 hours ago - at 07/03/2025 12:56AM

We've deployed a fix for the multipart uploads that were failing on Complete Multipart calls, and error rates have returned to normal levels. We will continue monitoring impact.

IDENTIFIED about 14 hours ago - at 07/02/2025 11:47PM

We've isolated the pattern leading to Multipart Uploads that are erroring during CompleteMultipartUploads and are preparing a fix for those requests.

INVESTIGATING about 15 hours ago - at 07/02/2025 09:56PM

Cloudflare has observed an increase in HTTP 500 responses on some CompleteMultipart API requests containing parts uploaded between 21:03 and 21:26 UTC. We are working to analyze and mitigate this problem. More updates to follow shortly.

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