>I found the Lockscreen property and checked all my forms and they are set to False. I was actually talking about the _Screen System Variable.

_SCREEN is just there. You can't get rid of it or change it. It's the VFP "background" for lack of a better term. It has properties and methods of your VFP environment, both in the IDE and at runtime. For instance:

_SCREEN.Caption = "My application"

would change the title bar of the main VFP screen. It has similar properties and events to your forms.