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Install GP-Pro EX 3.1 on the new computer and apply the same key code.
The installation wizard will validate the code. Once validated, the software will convert from Limited Edition to the Full/Registered version.
If your primary goal is simply to transfer a pre-made backup file to a replacement HMI screen, you might not need the full GP-Pro EX development software. Pro-face offers standalone utilities like or specialized transfer tools that sometimes operate under free or highly flexible licensing terms. Important Security and Compliance Warning
GPPro EX 3.1 represents a critical iteration in process simulation software, offering enhanced runtime environments and expanded driver support for industrial PLCs (Programmable Logic Controllers). As with many specialized industrial software suites, the functionality of GPPro EX is governed by a rigorous licensing system. Access to the full suite of tools—ranging from logic simulation to HMI (Human-Machine Interface) development—is regulated through the input of a specific "Key Code."
GP Pro EX 3.1 was designed for older operating systems like Windows 7 and Windows XP. If you are running it on Windows 10 or Windows 11, try right-clicking the program icon and selecting before entering the key code. Lack of administrative privileges can prevent the software from writing the license data to the Windows Registry. Upgrading Beyond GP Pro EX 3.1 gppro ex 31 key code
: Typically, license keys are provided by the software vendor or reseller. If you've purchased GPPro EX, you might find it in your purchase confirmation email or on a sticker on the software packaging.
GPPro EX is the premier development software for the Pro-face HMI series. It allows engineers to design intuitive graphical interfaces that operators use to monitor and control complex machinery. The "31" designation often refers to a specific version or licensing tier within the software’s ecosystem. Without a valid key code, the software remains in a limited "Trial Version" state, which prevents users from transferring completed projects to HMI hardware. This makes the key code the "master key" for bringing an automated system online. Security and Licensing Compliance
If you are using the Remote PC Access (RPA) feature, the key code must be entered directly on the HMI unit: Set the display unit to . Go to [Display Unit] > [Extended Settings] .
Close the software completely. Right-click on the GP-Pro EX shortcut, select Properties , go to the Compatibility tab, check Run this program as an administrator , click Apply, and try registering the key code again. Key Code Greyed Out Install GP-Pro EX 3
GP-Pro EX is the industry-standard software developed by Pro-face (a Schneider Electric brand) for designing, editing, and debugging screens for their extensive lineup of Human Machine Interfaces (HMIs). Version 3.1, while an older iteration, remains a reliable tool for many established industrial systems.
📌 : Keep a physical or digital copy of your key code in your project folder. If an HMI fails and you need to reinstall the software in a hurry, you won't lose time searching for paperwork.
Pro-face software licenses are bound to the machine on which they are active. If you are migrating your development environment to a new PC, you must properly migrate the license to avoid activation lockouts.
While the "GPPro EX 31 key code" is a specific artifact for an older software version, understanding its context is valuable for anyone maintaining legacy industrial control systems. However, the risks associated with using an outdated, unlicensed key far outweigh any short-term benefits. For modern industrial HMI projects, always procure a valid license to ensure security, compliance, access to support, and to take advantage of the latest features and security patches available in the current version of GP-Pro EX. If your primary goal is simply to transfer
You cannot transfer completed project files ( .prx ) to a physical Pro-face HMI unit.
Open GP Pro EX 3.1 on your Windows computer.
If you need GPro EX 31 specifically, here are the legitimate paths: