in reply to WWW::Mechanize install hangs on t\cookies.t ... 1/14

Maybe try-

install notest WWW::Mechanize

Update:

notest install WWW::Mechanize

I don't think Mech has any problems (not totally sure about running it on Win) which should trouble you once installed. It looks like, just guessing, the real problem is in the t/lib package TestServer which uses HTTP::Server::Simple::CGI. You might try installing/updating HTTP::Server::Simple::CGI first and see if that helps.