If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track. Run the System File Checker tool (SFC.exe)

This article applies if you’ve recently made changes to your device hardware and are trying to upgrade to Windows 11. Hardware changes might affect your upgrade eligibility, though you’ll need to take a few steps to see your updated eligibility in Settings.

Some Office 2019, Office 2016, and Office 2013 products come with a product key. If yours did, before installing Microsoft 365 for the first time, sign in with an existing or new Microsoft account and enter your product key at office.com/setup. Redeeming your key is what links your account with Microsoft 365 so you only have to do this once.

Learn how to add user accounts in Windows 10 and Windows 11. With an account, each person has separate files, browser favorites, and a private desktop.

Unlink a device in the Phone Link. To successfully remove a device, follow the steps below. You'll need to complete all steps for both your Android device and your PC in order to successfully unlink your device.

You can view and clear your Microsoft Edge browsing history stored on a single device, across all synced devices, and in the cloud. You may choose to clear your browsing history at any time.

If you need to reinstall Office, select the version you want to install and follow those steps: Microsoft 365, Office 2019, Office 2016, Office 2013, Office 2010, or Office 2007. How to uninstall Office automatically.

如果Microsoft 365 应用程序（如 Word 或 Excel）无法正常工作，有时重启会解决问题。. 如果这不起作用，你可以尝试修复它。. 完成后，你可能需要重新启动计算机。. Windows 10 Windows 11. 访问修复工具的步骤因操作系统的不同而异。. 右键单击左下角) (“开始” 按钮 ...

激活 Microsoft 365 或非订阅版本的 Office. 当启动未激活的 Microsoft 365 应用时，系统将提示登录到 Microsoft 365。. 请务必使用用于购买或订阅 Microsoft 365 的 Microsoft 帐户或工作或学校帐户进行登录。. 注意: 如果新设备上预安装了 Microsoft 365，请参阅 激活新 Windows 设备上 ...

以下步骤介绍如何卸载 PC (笔记本电脑、台式电脑或二合一一体机) 上的 Microsoft 365 产品。. 对于 Mac，请参阅 卸载 Office for Mac。. 提示: 卸载 Microsoft 365 仅 会从计算机中删除 Microsoft 365 应用程序，而不会删除使用 Office 应用创建的任何文件、文档或工作簿。.