HTTP 401 Status Code Definition
All > Technology > Search > SEO / Search Marketing
- The 401 status code means Unauthorized. This server requests user authentication prior to fulfilling the document request.
SEO Glossary.com - Cite This Source - This Definition - 200, 404, HTTP 301 Status Code Definition, HTTP 302 Status Code Definition, HTTP 400 Status Code Definition, HTTP 403 Status Code Definition, HTTP 404 Status Code Definition, HTTP 410 Status Code Definition, HTTP 500 Status Code Definition, HTTP 501 Status Code Definition