507
HTTPSERVER_ERRORCritical5xx Server ErrorHIGH confidence

Insufficient Storage

Production Risk

High. The server is unable to save state, which is a critical failure. It will affect all users trying to write data and must be resolved immediately.

What this means

The method could not be performed on the resource because the server is unable to store the representation needed to successfully complete the request. This condition is considered to be temporary. (WebDAV)

Why it happens
  1. 1The server has run out of disk space.
  2. 2The server has reached a user- or filesystem-specific storage quota.
  3. 3This is most common in environments that support file uploads or modifications, like WebDAV servers or cloud storage.
How to reproduce

A user attempts to upload a file to a server, but the server's hard drive is completely full.

trigger — this will error
trigger — this will error
PUT /new-file.txt HTTP/1.1
Host: webdav.example.com

expected output

HTTP/1.1 507 Insufficient Storage

Fix 1

Add Storage Space

WHEN You are the server administrator.

Add Storage Space
Add more disk space to the server, or clear out old, unnecessary files.

Why this works

Server Administration

Fix 2

Increase User Quota

WHEN The server uses per-user quotas.

Increase User Quota
Increase the storage quota for the affected user account.

Why this works

Server Administration

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