Strange thing, when I press that key combination, FS2024 instantly closes up. I have seen no binding related to the related keys.
This is the universal Windows keybinding for “close window”. It’s well known that MSFS 2020 didn’t prompt you if you were sure (like most games and apps with unsaved data do).
So I guess that issue is still open. 
1 Like
Funny but you know what, my 2024 does this even without any key binding 
It does just shut down itself and any possebility. 
4 Likes
Hi @ricdpm ,
Thank you for your post! Your topic has been moved to a sub-category of the User Support Hub
The General Discussion category is meant for discussions that fall outside of our other sub-categories.
If you would like other users to help you with an issue you are experiencing in the sim, consider these User Support Hub categories for your future post:
User Support Hub > Aircraft & Systems
User Support Hub > ATC, Traffic & NAVAIDs
User Support Hub > Crashes (CTDs)
User Support Hub > Hardware & Peripherals
User Support Hub > Install, Performance & Graphics
User Support Hub > Scenery & Airports
User Support Hub > User Interface & Activities
User Support Hub > Virtual Reality (VR)
User Support Hub > Weather & Live Weather
User Support Hub > Miscellaneous
Alt + F4 is the default combination that closes any program in Windows since the beginning of time (Windows 3.11 in 1994, for example). No binding necessary. Why this particular key combination? No idea…
1 Like
OK, thanks. 64 years old, using PC since MS-DOS era, and was not aware of it. Never late to learn 
3 Likes
Get yourself NoClose – Skrommel's One Hour Software installed…
SOOOO helpful for preventing accidental closure of the sim
Thanks, helpful 
Hello @ricdpm,
As others have mentioned above, this is not specific to MSFS2024 but is instead a universal binding in Windows that closes the current active program. It’s been this way across many versions of Windows going back multiple decades.
As for why this particular combination of keys was chosen, based on what I found on a web search, it was not actually Microsoft but rather IBM that originally came up with this design.
Thanks,
MSFS Team
Or download Microsoft Powertoys, and select section Keyboard Manager.
Then go to Remap Shortcuts.
Type Alt + F4 for ‘Physical Shortcut’ to remap, leave ‘Mapped to’ blank.
To restrict this to the sim, enter FlightSimulator2024 as Target App.
There’s nothing universal about the application closing with no warning. That’s entirely down to the developer.
In some circumstances even Chrome won’t simply close with alt+F4…
1 Like
Correct: it’s a standard part of the API for this – and has been since the 1980s – that the application can, and often does, prompt the user if it would disturb them to lose state.
We’ve all already been over this on the above-linked wishlist item, so it’d be great if this could be implemented in 2024 like we requested for 2020…
Because no one used it historically? 
Same here. I believe the GPU is being taxed and it just shuts down but the pc still runs. So it’s like flying blind. No monitors
I’m 65 and have known about Alt+F4 since 1994, when I first starting developing C++ Windows programs.
Back then, correct procedure was to intercept X or Alt+F4 and prompt the user to Save the file, if necessary. It was a popular feature for beginners and experts alike, especially those that lost an hours work in the blink of an eye.
So Asobo are not sticking to Bill Gates’ laws of Windows programming aka a consistent set of menus, commands and keystrokes that are familiar and easy to use.
They should at least intercept those keystrokes and mouse click and ask “Did you really want to kill your flight and passengers?”…or a similar message ha ha.
1 Like
In the DOS days early 1980s, a mouse did not exist on Windows.
About 30 key combinations were created to speed up the interface.
Ctrl + O was open a file
Ctrl + S was save
Ctrl + P was print
Ctrl + N was create a new file
ESC was cancel
F1 was help
Alt + F was the file menu
Alt + E was the edit menu
you can guess the rest.
Alt+ function key was special, and never equated to a menu item.
Alt + Enter was full screen toggle, like it is now.
Alt + F4 - I don’t know why F4 was picked to kill the program.
X started on the MAC which predated Windows. In fact Microsoft licensed Apple code to create Windows 1.0
I still believe this was a fun post and not a serious question.
Anyway this did light up my day.
But were Alt + F1 through F3 used? 
Nobody knows!