Installation media, such as a USB flash drive, can be used to install a new copy of Windows, perform a clean installation of Windows, or reinstall Windows. To create installation media, go to the software download website, where step-by-step instructions can be found.

See I forgot the account I use with Office. From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options.

Create Windows 11 installation media. On the Windows 11 software download page, select Create tool now and follow the instructions to install Windows 11. Warning: Microsoft recommends against installing Windows 11 on a device that does not meet the Windows 11 minimum system requirements.

Restore deleted files and folders or restore a file or folder to a previous state. Navigate to the folder that used to contain the file or folder, right-click it, and then select Restore previous versions.

For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn. For Microsoft 365 Germany go to portal.office.de. This completes the download of Microsoft 365 to your device. To complete the installation, follow the prompts in the "Install Microsoft 365" section below.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

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.

The easiest way to see if a device meets the requirements for Windows 11 after making hardware changes to the device is with the PC Health Check app: Download and install the PC Health Check app. The PC Health Check app can be downloaded from the following link: Right-click on the Start menu and select Search.

Applies To. 本文介绍安装 Windows 11 的方法。. 注意: 若要升级到 Windows 11，设备必须满足 Windows 11 的最低系统要求。. 某些 Windows 10 的功能在 Windows 11 中并不适用。. 体验某些 Windows 11 功能和应用程序的系统要求将超过 Windows 11 的最低系统要求。. 查找 Windows 11 规范 ...

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