Issue with FortiusANT: Fortius Not Detected After Reboot

[SimonFili]

Hi All,

Long story short: I have a Tacx Fortius that worked perfectly until January 1, 2025. I was using TTS4, but it stopped working. After some research, I discovered this GitHub project, and I was thrilled to find a way to keep using my old Fortius!

I proceeded to set everything up:

I installed Windows 10 on my old PC in the gym to start fresh.
Downloaded and installed the USB driver from this GitHub page.
Installed FortiusANT.
Connected two USB ANT+ dongles.
Installed Rouvy.
On the first try, everything worked perfectly! I managed to achieve a 30-minute ride in Rouvy—great experience.

However, now when I boot up my Windows 10 system and start FortiusANT, the Fortius is not detected. In Device Manager, I noticed that the Fortius appears under Jungo. When it was working before, it was listed under "LibUSB-Win32 USB Devices".

Here’s what I tried:

I deleted the Jungo device (including the drivers) in Device Manager.
Disconnected and reconnected the Fortius USB cable.
After this, the Fortius appears under "LibUSB-Win32 USB Devices" but with the message “No firmware”, and FortiusANT still doesn’t detect it.
Do you have any recommendations on how to resolve this issue?

Thanks again for creating this amazing tool!

[WouterJD]

I'll look into it shortly Met vriendelijke groetWouter Dubbeldam 

[SimonFili]

I tried the following:

Disable automatic driver updates in Windows:
This prevents Windows from automatically replacing the libusb driver with the Jungo driver. Here's how:

• Open Control Panel > System > Advanced System Settings > Hardware tab.
• Click Device Installation Settings.
• Select No (to prevent Windows from automatically downloading drivers).

Rebooted, now I see the Fortius and the 2 ANT under the same libusb driver.

Will try to use it soon, reboot and re-test. Will report back.

I don't mind much doing this on this PC, since it's only used for that in the gym.