本文介绍如何获取或创建用于 Office 文档的数字签名。 若要详细了解如何在 Office 文档中使用它们，请参阅 在 Office 文件中添加或删除数字签名。. 什么是数字签名？

When using Semi-Annual Enterprise Channel of Microsoft 365, you'll find that Microsoft 365 Copilot features are not available in your apps. In order to use the features enabled by your assigned Copilot license, you'll need to switch to Current Channel or the Monthly Enterprise Channel.

As you're getting your Microsoft 365 business subscription set up, you'll want to download and install your Microsoft 365 apps, like Word, Excel, Microsoft Teams, and PowerPoint, on your PC or Mac. Go to microsoft365.com and sign in with your Microsoft 365 account.

Scan the QR code below using your WhatsApp mobile app Use this [ shortlink ] to start chatting with Copilot instantly on WhatsApp. Alternatively, click 'Add Contact' on WhatsApp and search for Copilot by entering the phone number +1 877-224-1042.

Most apps for Microsoft 365 Family or Personal subscriptions and Office 2021 apps can be installed on either Mac or PC. Compare prices

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Before you begin. Driver updates for Windows, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update.

If you use both Outlook Web App and Outlook, you need to create a signature in each. For information about how to create and use email signatures in Outlook, see Create and add an email message signature.

The Microsoft 365 app launcher is a menu of apps and services that you are licensed for, and opens when you select the app launcher icon on Microsoft365.com. The App launcher makes opening and switching between your apps easy by highlighting your recently used apps, and providing quick access to your recent online Office documents.

Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.