Windows 10: Maximized window leaves blank space on top of screen

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Some Windows users are reporting when a program or app window is maximized, it leaves blank space on the top part of the computer screen. This is an annoying issue and can be caused by a lot of different things. In this article, we are going to see how to resolve the issue with some […]

This article Maximized window leaves blank space on top of screen first appeared on TheWindowsClub.com.

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Blank area at top of some programs when displayed in Maximized mode

I asked this question back on July 2020, but have updated it and am reposting in hopes that someone knows a solution. Others are experiencing the same problem.

The problem manifests itself as a blank area at the top of a maximized window. It occurs

• Only for certain programs (Notepad, Intel Graphics, Thunderbird, Firefox, Macro Exchange Pro32, VLC Media Player, Irfanview)
• Not for other programs (Word, Excel, Outlook, Powerpoint, Notepad++, PDFXchange Editor, Jarte, Mathcad, Visual Studio, Macrium Reflect)
• Only when the window is displayed in Maximized mode on whichever monitor is designated as primary on a dual-monitor system

When it occurs, clicking on the program's menu items does nothing, and if, for example, the X at the top right of the screen is clicked, it closes not the affected program, but rather any program underneath it.

The only way I've found to cure the problem temporarily is to reboot the computer. How long it takes before the problem recurs is variable. For example, I was free of the problem for over a month until 2 days ago. Now it's occurred 3 times in the span of 2 days.

I've seen various suggestions for curing the problem, but none have worked. For example, one person suggested using Task Manager to "end task" of dwm.exe. This works for an already-opened program, but if the program is closed and reopened the problem comes back.

This problem has been plaguing me (and others with dual monitors) for over a year. Any suggestions?

System: Windows 10 Home 2009 64-bit; Intel Graphics 630 card

[I wanted to reduce the size of these screenshots & display them side-by-side, but double-clicking them does not bring up a screen for adjusting size, as I was told. If someone can tell me how, I'll reduce them.]
Windowed_________________________________________________________________________Maximized

 

Windows 10, multi Monitor, maximized window blank/empty space on top/bottom of screen

The same problem (Intel Forum).

Solved: Windows 10, multi Monitor, maximized window blank/empty space on top of screen. - Intel Communities

 

Blank space at top of program windows

Hi,
screenshots please? Thus:




Build number as you were prompted by the forum please?

Diagnostic steps:
Perform a clean boot (Google or see tutorial if unsure how)- does the same problem occur?
Please create a new user for test purposes. Log in as that user - does the same problem occur?

Please confirm if you mean a clean install where Windows was installed to unallocated space on the disk using a Win 10 bootable medium.

Noted: PC seems to be from around 2016.