When I tried to use SOAP::Lite with a .Net class, I spent a lot of time trying to make the .Net understand the service's WSDL (that I had to do basically manually). It didn't work.

Then I tried to reverse the order, making a Perl SOAP client for the .Net service. Again SOAP::Lite didn't help because I couldn't read the WSDL and create a stub.

That might have changed by now, but SOAP::Lite cannot work with SOAP document style, which is the defaul option for .Net (it uses RPC style).

XML::Compile::SOAP::Client worked much better in this case.