Herman, there are tons of reports on the web about problems with all kind of software after the Windows 11 24H2 update. And it is extremly unlikely that Microsoft will do anything to solve this, especially when the effected software (in this case P3D and the Airbus) has been written some time ago. Additionally the A3xx series is a closed project and it is also very unlilely that Aerosoft will provide any kind of fix, if posible at all. And what about the next major Windows Update?
Currently I am aware of only 2 solutions:
1. rollback to the Windows version prior to 24H2
2. If you use Windows Defender, check if your file/folder exclusions are still active. Seems as if the Windows update has wiped out those exclusions (some users on the web reported this).