Try turning on the debugging of the requests and responses. 
use LWP::Debug qw(level); 
level('+comms');

[download]
Compare the output to a successful login from a browser. livehttpheaders is a Mozilla extension to record the HTTP protocol.

Things to look for are that the realm is right. See if the password is the same.

In reply to Re: LWP Credentials by iburrell
in thread LWP Credentials by js1

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