A Thing started yesterday on my laptop, which is an HP on Windows 10. I have a mail icon, which opens up a window with my various accounts all listed as option. Press 'button', new window. Usual switching between inbox and sent, etc, plus switching from account to account. Nice and easy.
Yesterday, the Thing started. I press the button, and the window opens up. It stays there for about three seconds before closing completely. Bish, bosh, back to whatever window I was on before. I am able to read my mail by going to my account and hitting 'open inbox', but I can't run it as I have been doing. Any ideas as to why it is just disappearing after three seconds of visibility?