HTTP 202 Accepted vs 526 Invalid SSL Certificate
HTTP 202 (Accepted) is a 2xx Success response, while 526 (Invalid SSL Certificate) is a 5xx Server Error response. 202 indicates that the request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon. In contrast, 526 means that cloudflare-specific. The origin's SSL certificate could not be validated.
Description
The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon.
When You See It
For async operations like batch jobs, email sending, or background tasks that take time to complete.
How to Fix
Poll the provided status URL or wait for a callback/webhook.
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
202 is a 2xx Success response, while 526 is a 5xx Server Error response.
HTTP 202: The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon.
HTTP 526: Cloudflare-specific. The origin's SSL certificate could not be validated.
You encounter 202 when for async operations like batch jobs, email sending, or background tasks that take time to complete.
You encounter 526 when when using Cloudflare Full (Strict) mode with an invalid origin certificate.
When to Use Which
For 202 (Accepted): Poll the provided status URL or wait for a callback/webhook. For 526 (Invalid SSL Certificate): Install a valid SSL certificate on the origin, or use Cloudflare Origin CA certificate.