How to Troubleshoot a Website That Returns 500 Errors Only for POST Requests

POST-only failures can involve request parsing, CSRF checks, body limits, application handlers, or database writes.

Checks to make

Compare GET and POST paths, inspect safe request metadata and application logs, and check body size, content type, and recent security rule changes. Reproduce with a controlled form and trace the first layer returning the error.

When to get help

Hosting support can trace request handling and application errors. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.