Steam always starts in Big Picture mode

I don't know why but for a few days Steam has been always starting in Big Picture mode.

It has even been doing this for the login screen:

Big Picture login screen

How do I fix this?


Have you checked if the option to always start in Big Picture Mode is set? It's on the Interface tab.


Click Steam > Settings then the Interface tab and uncheck Start Steam in Big Picture Mode.

Interface section of the Settings window