The OP described it as a Windows server so I assumed an RDP session is being used. Even if you aren't allowed to install things you can put a portable Perl folder such as from Strawberry Perl onto the server. This is the situation I work in with servers that are behind a firewall that doesn't allow web access. Most servers have an older version of ActiveState Perl that is required by a software application. I have a portable Perl folder that I have installed authentication email modules to on my personal workstation using CPAN. I can then deploy this folder to the servers so I can send authenticated emails. In the good old days I created install scripts to install modules on the ActiveState Perl in a particular order according to dependancies and hoped I didn't mess something up. It took me hours to deploy to multiple servers. Now I just give teammates a document describing how to copy the portable Perl folder and use portableshell.bat.