[alexvitkov]

Should I also change it on my mother's computer who doesn't speak English? We can also start distributing .bat files that change the system language along with our spreadsheets, for anyone who wants to open them. Maybe automate it with VBS, so it changes automatically when you open the spreadsheet. That's the solution.

[rickdeckard]

The VBS should then also lock the spreadsheet to foreground while it's opened, because the global change may affect other apps, like Windows Calculator may swap the comma/thousand separator.

Will write a user story for that if you share the link /s