Sometimes an issue arises that to connect Odoo 11 to Pycharm on Windows 10 doesn't work. It may be due to the internal server error of the system. Call windows 10 get help or visit http://howtogethelpinwindows10.co/ They will help you.   

Hi... I didn't do it for v11 but for v10, but I guess it's the same.

For module development I use odoo on windows but the hosted production server runs on ubuntu. To develop custom modules I installed odoo10 and have opened in pycharm odoo_install_dir/server. So I have all odoo classes and don't get any errors that it can't find "form odoo import ...". Custom modules are in  odoo_install_dir/server/odoo/customaddons.

This works for me so I don't need to FTP everything to the server for a simple change. I test modules on windows server and when they are completed I FTP them to the server. 

I've installed it on windows using the documentation https://www.odoo.com/documentation/10.0/setup/install.html