@MayAnnTenorio I have not found an easy way to trigger that control. It appears as though there is a security issue that prevents scripts from trigger those dialogs. The only way that might work that I could find would require rewriting the InnerHTML of the page to include another button that you'd click on that would trigger a script that clicks the upload dialog. I don't believe that the dialog will actually get created when your screen is locked though. I think that Windows knows the system is locked and will therefore not even draw the controls you've interrogated. They may work while you are testing because they have already been created when you lock your screen, however I believe that they won't exist if triggered while the screen is locked. My suggestion here is to run this with the screen unlocked. If that is not an option, then you'd likely need to pass on this requirement.