Yes I tried that and unfortunately getting this

LWP::UserAgent::new: ()

LWP::UserAgent::request: ()

LWP::UserAgent::send_request: GET http://server:port/path/script.aspx

LWP::UserAgent::_need_proxy: Not proxied

LWP::Protocol::http::request: ()

LWP::Protocol::collect: read 808 bytes

LWP::Protocol::collect: read 848 bytes

LWP::Protocol::http::request: Keep the http connection to server:port

LWP::UserAgent::request: Simple response: Unauthorized

LWP::Authen::Ntlm::authenticate: authenticate() has been called

LWP::Authen::Ntlm::authenticate: In first phase of NTLM authentication

LWP::Authen::Ntlm::authenticate: Returning response object with auth h
+eader:
Authorization NTLM XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+XXXXXXXXXXXXXXXXX

LWP::UserAgent::request: ()

LWP::UserAgent::send_request: GET http://server:port/path/script.aspx

LWP::UserAgent::_need_proxy: Not proxied

LWP::Protocol::http::request: ()

LWP::Protocol::collect: read 100 bytes

LWP::UserAgent::request: Simple response: Internal Server Error

Something's not right... ->500
[download]

I changed the server/port/path and the Authorization NTLM but otherwise this is the output.

The webserver server has a group policy applied which means I must use NTLMv2...

Using an old version of Perl.. should probably have mentioned that; 5.6.1.

Using the same credentials in a browser same url it works fine, on a server with the group policy disabled I don't have these problems either. (unfortunately disabling the policy is not an option...)

I'd have pulled my hair out by now if I had any!