http://www.perlmonks.org?node_id=1029030


in reply to Re^2: NTLM authentication with IIS 6
in thread NTLM authentication with IIS 6

LWP::Authen::Ntlm uses Authen::NTLM, and neither should need to be explicitly included, as the type of authentication is detected and the NTLM libraries are auto-included.

If I do not explicitly use Authen:NTLM I get:

Undefined subroutine &main::ntlmv2

Whether I specify them or not in the suggestion by Khen1950fx I still get response code of '500' with content:

<html><head><title>Error</title></head><body>The function requested is + not supported </body></html>