You can recognise HTTP Authentication when you access part of a website and your browser pops up a window prompting for username and password. Internet Explorer looks like:
To handle this type of authentication with HTTrack, use the following syntax for your URL(s), with the username and password that you would normally enter in the browser popup window:
If your username and/or password contains "special" characters you may have to replace (encode) them.
For example, if your username/password contains a '@' character, you should replace all '@' occurences with '%40' so that it can work:
Other characters include: