The HTTP code 406 stands for Not Acceptable Error status code. It is a status code that is issued by the server when it cannot provide a response that matches the content type requested by the client. Hence, to fix the HTTP 406 Not Acceptable error status code, you must tackle the root cause.
When the client requests the server, the browser informs the server regarding all the requests it can accept. These are called “Accept Headers”. At other times, the server receives information that is not in a suitable form, leading to the HTTP code 406.
- How to Fix a 406 Response Code?
- Protect Content Type
Analyse your “accept headers” to verify whether or not the necessary content type requests are accepted. This change will allow your server to accept the requests and erase the 406 Not Acceptable response code.
- Server Configuration
You can also verify the server configuration to handle the content types that are required for requests.
- Type of Content Entered
If the client is entering the incorrect type of content through requests, they should modify the request and send the request via the supported content type.
- Data Cache and Browser
Clear your browser and cache data to prevent entering a mismatched content type when requesting.
How to Detect HTTP Response Code 406?
- You can leverage API testing tools like Insomnia to send requests and check for any issues, such as the 406 status code, to be specific.
- You can also utilise server logs to find details about the requests that cannot be accepted, leading to HTTP response code 406 Not Accepted.
- You can also conduct manual checks if necessary.
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