Hi,
I'm currently on P3D 5.4 with Windows 11. I've uninstalled and reinstalled GSX (and Level 2) many times and during installation Patcher.exe encounters an error, so it restores the vehicles and airport object BGLs. The rest of the installation proceeds until completion. Then I ran the Universal Installed to update GSX. After running P3D, I get a message at the top that I can use to control panel to disable default jetways. When I do this, I get a window with the Patcher.exe error and the error code. It will not let me disable default jetways. In the sim I can see both default and gsx jetways and I have the ability to customise airport parking postions and jetways.
I have excluded all things FSDT & Virtuali from the windows antivirus and firewall. All VC++ resdistributables and .NET framework are up to date and the windows update is currently also up to date.