507 Insufficient Storage

WebDAV: the server cannot store the representation needed to complete the request.

507 at a glance

Code: 507
Name: Insufficient Storage
Class: 5xx Server error
Status: IANA-registered standard code
Defined in: RFC 4918, Section 11.5
Cacheable by default: No by default. Caches store it only when the response carries explicit freshness (Cache-Control max-age, s-maxage or Expires).

What 507 means

507 Insufficient Storage (RFC 4918) means the server ran out of space for this request, either physically or because a quota is exceeded. It is treated as temporary: once space is freed, the same request can succeed.

What typically causes a 507

Nextcloud and ownCloud user or group quotas exceeded during an upload.
Full disks on WebDAV and file-sync servers.

Fix it on the server

Monitor disk usage and quotas; return a clear message about which quota was hit.

Fix it as a client or visitor

Free space or ask for a larger quota, then retry the upload.

Example response

HTTP/1.1 507 Insufficient Storage
Content-Type: application/xml; charset=utf-8

<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns"><s:message>Insufficient space</s:message></d:error>