How Do I Fix 401 Unauthorized Error? [ 720p ]

Open Terminal and type sudo killall -HUP mDNSResponder . 6. If You Are the Website Owner

A means the server received your request, but it won’t let you in because you lack valid authentication. Essentially, the website doesn't know who you are or your login credentials aren't checking out. How Do I Fix 401 Unauthorized Error?

Are you seeing this on a or while working on coding/API development ? Open Terminal and type sudo killall -HUP mDNSResponder

If the website recently changed its security settings or moved servers, your computer might be using outdated IP information. Open Command Prompt and type ipconfig /flushdns . Essentially, the website doesn't know who you are

If you’re seeing this on your own site, the issue is likely in your configuration:

Ensure your server folders aren't set to permissions that block public access (standard is usually 755 for folders and 644 for files).

It sounds basic, but if your session timed out or a temporary glitch occurred during loading, a quick refresh (F5 or Cmd+R) can prompt the login box to reappear or fix a handshake error. 3. Log Out and Log Back In