Before diving into the fix, it is crucial to understand the software itself.

Click in the top menu bar, then choose Add legacy hardware .

Windows 10 and 11 require drivers to be digitally signed by Microsoft. The original v108 driver (usb2ser.sys) lacks a valid cross-signature for post-2016 Windows versions. When you install it, Windows blocks the driver, showing Code 52 or a toast notification: "Windows cannot verify the digital signature."