Python virtualenv on Windows 10 - AttributeError - geteuid

Hi, so on my Win10 PC I've got a Python 2.7 virtual environment where I have successfully installed the letsencrypt package. So when I run PowerShell as admin and do a simple command, like,

letsencrypt --helpall

I see the Major Subcommands message.

But when I try to use the manual plugin for my domain..

letsencrypt certonly --manual -w /var/www/georgethomasjr/ -d -d

.., I get an AttributeError that 'module' object has no attribute 'geteuid'.

What am I missing? Can't I use this virtual environment to generate the certs and then upload to my webhost via SSH or FTP?