4xx Client ErrorHTTP Status Code Reference
HTTP 408 Request Timeout— What It Means, Causes & How to Fix It
The server timed out waiting for the client's request. The client did not produce a request within the time the server was prepared to wait. The client may repeat the request without modifications.
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Common Causes
- Slow network connection delaying the request
- Client taking too long to send the request body
- Server's timeout threshold is too short
- Unstable internet connection dropping packets
How to Fix
- 1Retry the request — it may work on the next attempt
- 2Check your internet connection stability
- 3Reduce request payload size if possible
- 4Increase server-side timeout settings if you control the server
Example
HTTP 408 Request Timeout
POST /upload HTTP/1.1 (client stalls sending data) → 408 Request Timeout → Server closed the connection
Related Client Error Codes
400
Bad Request
401Unauthorized
402Payment Required
403Forbidden
404Not Found
405Method Not Allowed
406Not Acceptable
407Proxy Authentication Required
409Conflict
410Gone
411Length Required
412Precondition Failed
413Content Too Large
414URI Too Long
415Unsupported Media Type
416Range Not Satisfiable
417Expectation Failed
418I'm a Teapot
421Misdirected Request
422Unprocessable Content
423Locked
424Failed Dependency
425Too Early
426Upgrade Required
428Precondition Required
429Too Many Requests
431Request Header Fields Too Large
451Unavailable For Legal Reasons
Commonly Referenced Status Codes
The most frequently searched HTTP status codes