401

Updated: 08/02/2020 by Computer Hope

401 may refer to any of the following:

401 in white lettering on red background.

1. 401 is an HTTP (HyperText Transfer Protocol) status code for unauthorized access, incorrect credentials, or the HTTP location is not set up properly.

2. 401 is a US area code. See our 401 area code listing for further information.

Error, HTTP, Web design terms