🤦‍♂️...................................
In the 1990s, my employer rolled out a new internally-developed program that required entering values with decimals.
It was developed in Access in the US.
The program didn’t run in certain countries. After troubleshooting, they discovered that, say, in Finland, their domestic version of Windows recognized the COMMA as the decimal separator. This made the program incompatible.
The temporary work-around, was for the user to go to their Windows International settings and select UNITED STATES. The users was informed they’d have to “conform” to using the period as the decimal separator (and the comma as the thousand separator).
This may have screwed up local/domestic programs, but at least the US program worked.