Some games are designed to be opened in a small window.
If the issue persists in other programs as well like the Internet Explorer you may follow these steps:
Programs like Internet Explorer will open to the same size and placement as they were when they were closed.
Method 1: If you want Internet Explorer(IE) to open full-size when you start it up, you must first start IE, and then maximize the window. Now click
File, and then Close. Now restart IE, and it should start up in a full-sized window. If half of the window is off the screen when you start a program, bring the window to the location you want and then click
File and then Close and it will re-open in this position the next time.
Changing the size of windows that appear when you click on an Internet link takes a few more steps.
Open Internet Explorer. Now open another instance of Internet Explorer so that you have two running at the same time. In the second one, right-click a link and select “Open In New Window”. If the new window does not start in
full screen, simply resize the window by dragging the edges out to the sides of the screen. Do not use the max button.
Close the first window by selecting File, then Close. Now close the window you just made full size. But close it by holding down the Control key and selecting
File, then Close. Do not release the Control key until the window is closed.
Now close the last Internet Explorer window. If you do this right, the settings will stick. You may or may not have to reboot, depending on your operating system.
If you use the Quick Launch Toolbar to open Internet Explorer(IE), then you can right click on the IE icon in the toolbar, select
Properties and then change Run->Normal Window to Run->Maximized. Thereafter, any time you click the IE quick-launch icon, IE will open full screen.
Divya R – Microsoft Support.
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