4xx Client Error

HTTP 416 Range Not Satisfiable

The client requested a portion of the file using the Range header, but the server cannot supply that portion. Typically because the requested range is beyond the end of the resource.

Common Causes

  • Requested byte range exceeds the file size
  • Resume download with an offset beyond the current file length
  • File was truncated or changed since the range was calculated

How to Fix

  1. 1Check the file size with a HEAD request before requesting a range
  2. 2Reset the download instead of trying to resume
  3. 3Verify the Content-Range values are within bounds

Example

HTTP 416 Range Not Satisfiable
GET /file.zip HTTP/1.1
Range: bytes=99999999-

→ 416 Range Not Satisfiable
→ Content-Range: bytes */50000

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

408

Request Timeout

409

Conflict

410

Gone

411

Length Required

412

Precondition Failed

413

Content Too Large

414

URI Too Long

415

Unsupported Media Type

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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