How do I fix a http error 400 bad request error?

A “HTTP Error 400” response while connecting to a website may be due to multiple reasons. Here are the most common methods to fix the error that any user can try.

Issue/Symptom:  

• User is seeing “http error 400” when attempting to access a website 

Environment:   

• Various internet browsers 

Resolution:   

A “HTTP Error 400” response attempting to connect to a website may be due to multiple reasons. Here are the most common methods to fix the error:  

1. Clear the browser cache and cookies 

• See this knowledge base article for instructions to your specific browser/device: How do I clear Cookies and Cached Site Data? 

2. Disable browser extensions (use the web to search for instructions for your specific browser and device) 

3. Verify you are using the correct URL address, not an outdated one

4. Try a different browser

5. Check for any pending updates for the browser or your device

6. If you are uploading files, ensure the file size is within server limits

• Sending large files to a server can trigger error 400. You may see a “400 Bad Request” error message if your request exceeds the file upload limit of the server. The simplest solution is to compress your files. 

7. Restarting device. 

• Restarting your device or your network connection may resolve the bad error request.  

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