After upgrading to macOS Sequoia version 15.0.1, you might notice that the long press functionality for typing accent characters, like é, è, â, and ï, is no longer working.
The feature, which allows users to hold down a key to see accent variations, seems to have been disabled by default in this version. Fortunately, there’s a quick fix using the command line.
defaults write -g ApplePressAndHoldEnabled -bool true
This command restores the press-and-hold behaviour, making it easy to type accented characters once again. After running this command, restart any open applications for the change to take effect, and you’ll have your accent keys back to normal.