I experience the exact same problem as in this post: Hub Detecting Uninstalled Simulators .
MSFS2020 is completely uninstalled from my system, the folder is indeed gone. I can’t find any traces of a configuration file in %localappdata%. I have tried to reinstall Navigraph Hub, but it still shows up.
Hi,
Could you please check if this folder exists?
Copy & paste this line into your file explorer:
when you had the Store version:
%localappdata%\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache
when you had the Steam version:
%appdata%\Microsoft Flight Simulator\LocalCache
Cheers
Richard
I had MSFS2020 from steam. The LocalCache directory does not exist, however the base directory does.
PS C:\Users\USER\AppData\Roaming\Microsoft Flight Simulator> ls *LocalCache* -Recurse -Directory
PS C:\Users\USER\AppData\Roaming\Microsoft Flight Simulator>
The critical file is the UserCfg.opt file … The Hub searches for this file to determine if (and which) MSFS version is installed.
UserCfg.opt file → Hub shows the MSFS2020 tab:
Renamed my UserCfg.opt file to _UserCfg.opt → Hub does not show the MSFS2020 any longer:
Can you please check if you have this file somewhere on your system? Of course, for MSFS 2024, you also have this file, but it is located in a different root folder but this file should be located in the LocalCache folder … for MSFS2020 and MSFS2024.
Cheers,
Richard
That was it! UserCfg.opt was present in %appdata%\Microsoft Flight Simulator. Renamed it and MSFS2020 disappeared from Hub.
Thank you 
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