403 may refer to any of the following:
403 is an HTTP status code for forbidden, meaning the requested item cannot be accessed. A 403 is often caused when a file or directory containing the file does not have the proper permissions set or has wrong permission settings. The error can also be caused when the file is inaccessible because of permissions set on the server. For example, if the IP address is blocked in the .htaccess on Apache server, it would cause a 403 error.
403 is a US area code. See our 403 area code listing for further information.
If you have the correct permissions to access this file, try accessing the page again in an hour. If the problem persists, contact the webmaster of the web page. If you are the webmaster, make sure your permissions are correct.
See our HTTP definition for a listing of other HTTP error codes.
Error, HTTP, Web design terms