Proface Connection Key Reset [updated]

Would you like this guide tailored for a specific Pro-face software version (e.g., GP-Pro EX V4.0 or older) or a particular key model (Sentinel vs. Wibu)?

This article provides a definitive guide to resetting, bypassing, and preventing Proface Connection Key issues across the LT, ST, GP, and SP series units. proface connection key reset

If you have the original project file ( .prx ) on your computer but the password on the HMI does not match what is in your file (or you don't know the password in the file), you can attempt to overwrite the security settings. Would you like this guide tailored for a

This assumes a lost, expired, or malfunctioning license key (USB dongle or software-based key). If you have the original project file (

Last updated: October 2025. Applies to GP-Pro EX versions 3.0 through 5.0.

There are legacy tools circulating online (e.g., GP-Pro Key Remover or Proface Password Unlocker ).