use Authen::NTLM; (which you never use) should be use LWP::Authen::Ntlm;.

Also, the documentation states you need to pass keep_alive => 1 to LWP::UserAgent's constructor (which you can do by passing it to WWW::Mechanize's constructor).

In reply to Re: mech and NTLM authentication? by ikegami
in thread mech and NTLM authentication? by Anonymous Monk

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