How to fix application windows disappearing out of screen

 Ref: https://www.technipages.com/bring-off-screen-window-back-onto-screen

Recently had a download manager disappearing out of screen after cancelling the download multiple times. Not sure how did i managed to do that!

Luckily the helpful Mr Google pointed me to the a helpful post with multiple options to restore it :)

Windows: Bring Off-Screen Window Back Onto Screen

By Mitch Bartlett 

While using Microsoft Windows, I had a window that had somehow fallen completely off of my screen. Right-clicking the window in the Taskbar and selecting Maximize brought it back, but there was no way I could get the window restored to where I could move it around my screen with my mouse.

Luckily, there are a couple of ways to bring off-screen windows back to the desktop screen.

Fix 1 – Resolution Trick

Windows 10 & 8

1. Start the problematic application.
2. Right-click a blank area of the Desktop, then choose “Display settings“.
3. Select “Advanced display settings” at the bottom of the window.
4. Temporarily change the “Resolution” to another value, then choose “Apply“.
5. See if you can see the window on your screen now.
6. Change the resolution back to the previous value, then select “OK“.

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Windows 7

1. Start the problematic application.
2. Right-click a blank area of the Desktop, then choose “Screen Resolution“.
3. Temporarily change the “Resolution” to another value, then choose “Apply“.
4. See if you can see the window on your screen now.
5. Change the resolution back to the previous value, then select “OK“.

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Fix 2 – Show Desktop Toggle

1. Hold down the Windows Key, then press “D“. Repeat these steps to see if it makes the window you are looking for reappear.
2. Alternately, you can right-click a blank area of the taskbar, then choose “Show the desktop“, then repeat.

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Fix 3 – Move Option 1

1. Select the program in the task bar.
2. Hold the Windows Key while pressing Left Arrow or Right Arrow repeatedly to move the window back into view.

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Fix 4 – Move Option 2

1. In Windows 10, 8, 7, and Vista, hold down the “Shift” key while right-clicking the program in the taskbar, then select “Move“. In Windows XP, right-click the item in the task-bar and select “Move“. In some instances, you may have to select “Restore“, then go back and select “Move“.
2. Use your mouse or the arrow keys on your keyboard to move the window back onto the screen.

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Fix 5 – Cascade Windows

• Right-click a blank area of the task-bar, then select “Cascade windows“.
  

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Fix 6 – Maximize

Sometimes a single app will get stuck in a state where it cannot redraw onto the Window. You can usually alleviate this by doing the following.

• Hold “Shift” and right-click on the program icon in the taskbar, then choose “Maximize“.
  

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FAQ

How do I prevent my application from starting off the screen every time I launch it?

Most applications will stop doing this if you properly exit out of the application while it is on the screen. If you have already properly exited the application, you might need to uninstall and reinstall it.

Otherwise, you can try right-clicking the icon for the application, then choosing “Properties“. Under the “Shortcut” tab, change the “Run” setting to “Maximized“, then select “OK“.