Find out how to get a DVD player app, add-on, or plug-in, or whether you can upgrade your edition of Windows to add DVD playback.

Learn how to use Narrator, a screen-reading app built into Windows, with this complete guide and how-to articles.

Creating a passkey. To create a passkey for your Microsoft account, follow these steps on the device for which you’d like to create a passkey:

Digital signatures provide assurances about the validity and authenticity of digital documents.

可通过不同的方式删除应用和程序，因此如果找不到要查找的应用和程序，可以尝试另一个位置。 请注意，某些应用和程序内置于 Windows 中，无法卸载。

This article describes how to change keyboard layouts in Windows 7 and earlier versions of Windows.

Learn how to change your notification settings and quick actions using the notification center in Windows.

Select Settings and more next to your profile picture at the top of Teams to manage call settings in Microsoft Teams. You can block callers, forward calls, simultaneouly ring, and set your default calling app.

Visio is a diagraming tool that makes it easy and intuitive to create flowcharts, diagrams, org charts, floor plans, engineering designs, and more by using modern templates with the familiar Office experience. On this page, you can access some of the top templates and sample diagrams available in Visio, or request ones that you want. To see the hundreds of templates and sample diagrams ...

The IFS function checks whether one or more conditions are met and returns a value that corresponds to the first TRUE condition. IFS will allow you to include up to 127 pairs of conditions (the test if something is True and the result if something is true). IFS can take the place of multiple nested IF statements.