Just in case it’s useful, I’ve found a negative side effect after installing Windows 11 26H2. In my case it affects GSX, the Fenix A320, and cockpit2ground, but mainly the first two.

After installing the update, GSX initially works fine, but at some point it just stops working — all its elements disappear, the menu won’t open, etc.

I’m mentioning it here because this issue has happened to me twice in a row, and the only way I’ve been able to fix it both times was by uninstalling the 26H2 update and doing a clean reinstall of Fenix (following the developer’s instructions to the letter).

After that, everything goes back to normal.

On 10/4/2026 at 3:30 AM, Fantrainer said:

Just in case it’s useful, I’ve found a negative side effect after installing Windows 11 26H2. In my case it affects GSX, the Fenix A320, and cockpit2ground, but mainly the first two.

After installing the update, GSX initially works fine, but at some point it just stops working — all its elements disappear, the menu won’t open, etc.

I’m mentioning it here because this issue has happened to me twice in a row, and the only way I’ve been able to fix it both times was by uninstalling the 26H2 update and doing a clean reinstall of Fenix (following the developer’s instructions to the letter).

After that, everything goes back to normal.

Thanks for that. I will def hold off on this update for one simple reason: it all currently works great.