HTTP 417 Expectation Failed vs 530 Site Frozen
HTTP 417 (Expectation Failed) is a 4xx Client Error response, while 530 (Site Frozen) is a 5xx Server Error response. 417 indicates that the server cannot meet the requirements of the Expect header. In contrast, 530 means that cloudflare-specific. Used by Pantheon hosting to indicate a frozen site.
Description
The server cannot meet the requirements of the Expect header.
When You See It
When the server doesn't support Expect: 100-continue.
How to Fix
Remove the Expect header from your request.
Description
Cloudflare-specific. Used by Pantheon hosting to indicate a frozen site.
When You See It
When a site on Pantheon hosting has been frozen due to inactivity.
How to Fix
Reactivate the site on the hosting platform.
Key Differences
417 is a 4xx Client Error response, while 530 is a 5xx Server Error response.
HTTP 417: The server cannot meet the requirements of the Expect header.
HTTP 530: Cloudflare-specific. Used by Pantheon hosting to indicate a frozen site.
You encounter 417 when when the server doesn't support Expect: 100-continue.
You encounter 530 when when a site on Pantheon hosting has been frozen due to inactivity.
When to Use Which
For 417 (Expectation Failed): Remove the Expect header from your request. For 530 (Site Frozen): Reactivate the site on the hosting platform.