EN
4064xx Client errors

HTTP 406 Not Acceptable

The server cannot return the content in a format the client said it accepts.

Quick answer

HTTP status code 406 (Not Acceptable) means: The server cannot return the content in a format the client said it accepts. Yes, a client error: the request was wrong or not allowed. Usually the link, the login or the data sent needs to change.

Is it an error?

4xx Client errors

Yes, a client error: the request was wrong or not allowed. Usually the link, the login or the data sent needs to change.

The problem is in the request: wrong address, missing permission or invalid data.

Common causes

  • Format or content type the server cannot handle

If you are visiting the site

  1. Update your browser or app
  2. Contact the website if the problem continues

If you run the website

  1. Review recent configuration changes (.htaccess, nginx/Apache rules)
  2. Validate input and return a clear error message

Frequently asked questions

What does HTTP 406 mean?

HTTP status code 406 (Not Acceptable) means: The server cannot return the content in a format the client said it accepts.

Is HTTP 406 an error?

Yes, a client error: the request was wrong or not allowed. Usually the link, the login or the data sent needs to change.

How do I fix a 406 error?

If you are visiting the site: Update your browser or app; Contact the website if the problem continues. If you run the website: Review recent configuration changes (.htaccess, nginx/Apache rules); Validate input and return a clear error message.

4xx Client errors