If your computer is unable to connect to our server, it may well be that it is blocked by firewall or your workplace, school, government, etc., which can lead to update errors or other problems. From version 2.1.9 we add proxy server support to help solve these problems. This article shows you how to configure Final Uninstaller to use a proxy server to connect to the Internet
Setting Up HTTP Proxy Server
Open Final Uninstaller. At the top of the main window, click Settings.
On the "Update Options" pane, place a checkmark next to the item "Use HTTP proxy server". And fill in the form with your proxy server's IP address and port. Fill in a user name and password if necessary.