To force an app to close, do the following: On your iPad or iPhone, press the Home button twice. This shows all the apps that are currently open. Swipe left or right to find the app you want. Swipe the preview screen up to close it. This example shows PowerPoint being closed.
How to close an app or game on Xbox. | Xbox Support
This article provides the steps on how to close a Microsoft account and explains the risks and impact associated with closing an account. Risks and impact of closing a Microsoft account
To close a document, select the File tab and select Close. To close Word, select X Close in the upper-right corner.
When you’re ready to make your PC sleep, just press the power button on your desktop, tablet, or laptop, or close your laptop’s lid. On most PCs, you can resume working by pressing your PC's power button.
From Microsoft 365 or Office for PC In any Microsoft 365 or Office app, go to File > Account (or Office Account in Outlook) > Sign out. Close all Microsoft 365 or Office apps.
You can close individual Excel workbook windows or close all workbook windows and exit Excel.
Unwanted pop-up windows can sometimes be tricky to close and may even cause your browser to stop responding. If you have a persistent pop-up window giving you problems, here's how to use Task Manager to close it:
Select the Close (X) button in the upper-right corner of the app window to close it. Then, reopen the app. Make sure Windows is up to date. Select Start > Settings > Windows Update > Check for updates. If there is an available update, select Install now. Make sure that your app works with Windows 11.