How to Fix '400 Bad Request - Request Header or Cookie Too Large nginx' Error

Experiencing a '400 Bad Request - Request Header or Cookie Too Large nginx' error can be frustrating. However, this is a common issue that many webmasters and developers encounter. The good news is that it can be easily resolved.

PuTTY can be used for this.

Open your Nginx configuration file using a text editor. If you're using a default installation, you can use the command sudo nano /etc/nginx/nginx.conf

Locate the http block and include the following lines:

Prompt

client_header_buffer_size 1k; large_client_header_buffers 4 16k; client_body_timeout 12; client_header_timeout 12;

The values above are just examples. You can adjust them according to your needs.

Understanding HTTP Cookies

1. By following these steps, you should be able to resolve the '400 Bad Request - Request Header or Cookie Too Large nginx' error. Don't be discouraged if you encounter server issues. They are a normal part of managing a website and can be resolved with a bit of knowledge and patience.