HTTP

HTTP 424 Failed Dependency vs 526 Invalid SSL Certificate

HTTP 424 (Failed Dependency) is a 4xx Client Error response, while 526 (Invalid SSL Certificate) is a 5xx Server Error response. 424 indicates that the request failed because it depended on another request that failed (WebDAV). In contrast, 526 means that cloudflare-specific. The origin's SSL certificate could not be validated.

Description

The request failed because it depended on another request that failed (WebDAV).

When You See It

In batch WebDAV operations when a prerequisite action fails.

How to Fix

Fix the failed dependency first, then retry the operation.

Description

Cloudflare-specific. The origin's SSL certificate could not be validated.

When You See It

When using Cloudflare Full (Strict) mode with an invalid origin certificate.

How to Fix

Install a valid SSL certificate on the origin, or use Cloudflare Origin CA certificate.

Key Differences

1.

424 is a 4xx Client Error response, while 526 is a 5xx Server Error response.

2.

HTTP 424: The request failed because it depended on another request that failed (WebDAV).

3.

HTTP 526: Cloudflare-specific. The origin's SSL certificate could not be validated.

4.

You encounter 424 when in batch WebDAV operations when a prerequisite action fails.

5.

You encounter 526 when when using Cloudflare Full (Strict) mode with an invalid origin certificate.

When to Use Which

For 424 (Failed Dependency): Fix the failed dependency first, then retry the operation. For 526 (Invalid SSL Certificate): Install a valid SSL certificate on the origin, or use Cloudflare Origin CA certificate.

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