4xx Client Error

HTTP 408 Request Timeout

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.

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

  1. 1Retry the request — it may work on the next attempt
  2. 2Check your internet connection stability
  3. 3Reduce request payload size if possible
  4. 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

401

Unauthorized

402

Payment Required

403

Forbidden

404

Not Found

405

Method Not Allowed

406

Not Acceptable

407

Proxy Authentication Required

409

Conflict

410

Gone

411

Length Required

412

Precondition Failed

413

Content Too Large

414

URI Too Long

415

Unsupported Media Type

416

Range Not Satisfiable

417

Expectation Failed

418

I'm a Teapot

421

Misdirected Request

422

Unprocessable Content

423

Locked

424

Failed Dependency

425

Too Early

426

Upgrade Required

428

Precondition Required

429

Too Many Requests

431

Request Header Fields Too Large

451

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