Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

If either of the categories above apply to you, use the following procedures to update your browser: Update once. In the browser, go to Settings and more > Help and feedback > About Microsoft Edge (edge://settings/help).. If the About page shows Microsoft Edge is up to date., you don't need to do anything.

Get a free version of Microsoft Teams (for work, school, or friends and family) If you don’t have Microsoft 365 and you don’t use a business or school account, you can get a basic version of Microsoft Teams.

使用 Windows 设置应用更改桌面背景和颜色。

You can insert the current date and time in an Excel cell as static values or as dynamic values. A static value is one that doesn’t change when the worksheet is recalculated or opened. A dynamic value is one that is updated each time formulas are recalculated.

Join your work-owned Windows 10 device to your organization's network so you can access potentially restricted resources. What happens when you join your device

This article explains how you can get or create a digital signature for use in Office documents. To learn more about how to use them in Office documents, see Add or remove a digital signature in Office files.. What is a digital signature?

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

The Microsoft Teams web app works for most desktop browsers, including Chrome, Firefox, and Internet Explorer.

If your account has been hacked, use our sign-in helper tool below to help guide you to the right solutions. The tool will ask for your email address or phone number, and either show appropriate self-help, or offer the chance to talk to an agent.