Windows 10: How do I get rid of invisible window open on my desktop? Windows 11

I have this problem here. The windo in the bottom cant be closed. I dont know how to get rid of it. Can someone please help me.

:)

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.

 

Opening program invisible

So im practicing piano and got this free software piano from above and it opens but i cant see it

I have one monitor that is connected to a desktop and when i try to open the software it goes invisible but its still open any suggestions.

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How do I get rid of invisible window open on my desktop?

Good evening

1. Open the task manager: ctrl + shirt + esc

then
the task window opens: you click once explorer.exe
you click on end the process
click on Yes
click on new tasks
a small window is displayed,
you enter in this window explorer.exe
click OK
finally the window which was invisible will be visible
if you want you can delete it.