Web addresses are case sensitive. Be sure to watch for commas instead of periods. Something is wrong with the URL you entered. Check your typing, expecially special characters like slashes and colons as well as uppercase letters. If you entered a password, you may have typed it incorrectly.
Passwords are, also, case sensitive.
Same as 401 Unauthorized . You should try your password, again. This one is a common error. Try deleting everything after the last slash in the URL to see if you get a page with a link to the page you want. Also, check your spelling.