Proxifier for Windows v4

We are proud to present a new major version of Proxifier for Windows, which is the result of significant effort, experience, and research. Version 4 introduces a great number of new features and improvements that will be useful for all current and future users.
Please send us your feedback at info@proxifier.com.

Completely Rewritten Network Engine

The new network engine is based on Windows Filtering Platform (WFP) technology. This is the most up-to-date way to handle traffic on the Windows platform. It provides a number of unique features, including the following:

Ability to handle all connections, including Windows Store apps, Windows Subsystem for Linux (WSL), and Windows Sharing Folders
Improved performance in high-load scenarios
Significantly reduced number of conflicts with third-party software (e.g., antivirus software)

Network Interfaces

Proxification Rules can now be bound to network interfaces. This allows Proxifier to work in completely new scenarios when you need to select targets and applications that should be connected over a specific interface (Ethernet, Wi-Fi, VPN, etc.).
This effectively allows you to

use and manage multiple VPN connections and proxy servers at the same time and
prioritize traffic based on the availability of different interfaces.

Updated User Interface

The Proxifier graphical user interface has been significantly reworked and improved, giving it a new, fresh look and increasing the ease of use. Major updates include the following:

All components from icons to controls optimized for high DPI screens
Resizable dialogs with adaptive content
UI state preserved after program restart
New traffic graph

Multiple Improvements in All Areas

In addition to the major updates listed above, the new version provides many new features and improvements in all areas of the program, including the following:

Paths and PIDs in Proxification Rules
Kerberos authentication and custom User-Agent header for HTTPS proxy
Helper tool for Service Mode configuration
An option to pass target hostname instead of IP to proxy
No reboot after install/uninstall needed in the vast majority of cases
64-bit build
Long paths support
Proper processing of connections from pre-bound sockets
Multiple reconnect attempts from the same socket supported
Improved IPv6 processing
Debug log level introduced
Connections close gracefully in more cases
Proxifier System Tray icon does not disappear
Manual Proxification for elevated apps supported
Proxifier is more tolerant to Profile file format
And much more

Trial and Upgrade Notes

You can use Proxifier v4 for 31 days for free. You will need to buy it if you decide to continue using it beyond the trial period.

If you buy Proxifier version 3 on or after July 1, 2020 or have a current maintenance plan, you can upgrade to version 4 free of charge. All other customers can upgrade to version 4 with a 50% discount.

Proxifier v4 for Windows