The "403 Forbidden" error is an HTTP status code that indicates the server understands the request but refuses to authorize it. This means that the user does not have permission to access the requested resource, which could be a webpage, file, or directory on a website. The server is essentially saying, "You are not allowed to view this content." Common reasons for encountering a 403 Forbidden error include insufficient permissions set by the website owner, restrictions based on the user's IP address, or the need for authentication. It is important to check with the website administrator if you believe you should have access to the resource in question.