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Microsoft 365 商业版 如果 企业 订阅计划包含桌面版 Microsoft 365 应用，则除非组织中有人向你分配了许可证，否则你不会看到安装它的选项。 了解如何在我拥有哪些 Microsoft 365 商业版产品或许可证？ 中检查此项；如果你是负责向组织中人员分配许可证的 Microsoft 365 管理员，请参阅向用户分配许可证。

Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.

To see self-help answers, or to get support via email, Select Help from the top menu then Help. Open the Help pane. Enter your question or issue in the Search Help box on the right, and then press Return. If the self-help answers don't resolve your issue, try a different search, ...

The easiest way to get language packs for Windows 8.1 and Windows RT is to download and install them using the Language Control Panel. Download and install additional languages to view menus, dialog boxes, and other user interface items in your preferred language.

Use the Windows Settings app to change your default browser.

To check for any security issues, go to Windows Defender settings, select Show details, and check your security status.

Step 2: Back up your folders. Windows Backup is an easy, single stop for all of your backup needs. Your free Microsoft account comes with 5 GB of OneDrive cloud storage (and more storage is available if you need it), and backing up your folders syncs the folders you specify to your OneDrive account, making them instantly accessible on all computers that you use with this Microsoft account.

了解如何使用電腦健康情況檢查應用程式，協助改善您的裝置效能。 使用 Microsoft 帳戶登入或建立新帳戶，以跨裝置同步您的喜好設定，例如密碼、Microsoft Edge 瀏覽器設定 (例如我的最愛和閱讀清單、佈景主題等等)。

When you sign in to sync to Microsoft Edge , you can easily browse the web from any of your devices, keep your favorites organized, and always pick up right where you left off.. Sign in to sync your account on your computer Setting up sync on your computer. In Microsoft Edge, select the profile image in the browser taskbar.