What it means
Cloudflare-specific: a connection to the origin was made, but the origin did not send an HTTP response in time (100 seconds by default).
Common causes
- Long-running request such as a report or import
- Slow database queries
- Overloaded application
How to fix it
As a client or visitor
Retry later or use an asynchronous export if available.
As the site or API owner
Move long work to background jobs and return 202, or stream progress; Enterprise plans can raise the timeout.
Example response
HTTP/1.1
HTTP/1.1 524 A Timeout Occurred
Date: Tue, 07 Oct 2025 09:30:00 GMT
Server: nginx
Content-Length: 0Specification
Not in the IANA registry; used by Cloudflare. Cloudflare
FAQ
› Can I increase Cloudflare's 100-second timeout?
Only on Enterprise plans. Otherwise make the request faster or asynchronous.
› 524 vs 504?
524 is Cloudflare's own timeout page; 504 comes from any other gateway.