In rare instances, ABZU's settings may become corrupted if it crashes when the file is being updated.  If you run into a situation where the game no longer launches correctly, even after verifying the game cache and reinstalling it, deleting the following may help:

1. Press Win+R to bring up the Run dialog
2. Type "%LocalAppData% " (without the quotes) and press Enter
3. Delete the AbzuGame directory
4. Start the game