Keyboard language inexplicably changed

Just go to system preferences > keyboard > input sources and make sure there is only one item on the list, and that the name of that item is "US". Use the minus button to remove French and any others.

There are various ways items can get mistakenly added to that list, nothing to worry about.

tonyfromindianapolis wrote:

Thanks, but already removed it from the list.

The concern for me is that I was never in that list to ADD the French keyboard in the first place.

Is your problem solved now, or do you still find your keyboard switching even if US is the only item on the list? If you still have the problem, could you post a screen shot of what you are seeing? French characters can be also be made with the US layout via hold and press of certain keys and via certain option key shortcuts.

Keyboards can sometimes get added randomly or in ways the user would not expect. I have not seen any cases where this was anything to worry about.