The 404 errors are irrelevant in this case, they are “normal”.
The first error, however, indicates that there was an issue when reading our persistent database. Please do the following:
- Press Win + R
- Type the following and press enter:
Store Edition
%localappdata%\Packages\Microsoft.Limitless_8wekyb3d8bbwe\LocalState\WASM\MSFS2020\navigraph-efb-simbriefapp
Steam Edition
%appdata%\Microsoft Flight Simulator 2024\WASM\MSFS2020\navigraph-efb-simbriefapp
- An Explorer window should open, showing a directory with several files and a
workfolder. Delete this folder and restart the simulator