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.

The Xbox Offline System Update (OSU) process allows you to update your console by downloading a file to a USB flash drive and then installing that file directly onto your Xbox Series X|S or Xbox One console. To use the Offline System Update, you'll need:

When critical Windows system files are missing or corrupted, your operating system may begin to malfunction. Common symptoms include Windows features not working properly, system errors, or Windows becoming unresponsive or freezing.

By booting from the installation media and selecting the appropriate recovery options, you can restore your system to a stable state without the need for a complete wipe. In cases where a fresh start is required, the installation media can be used for a new installation of Windows.

After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, but we recommend moving to Windows 11. Learn more. Note: Use these steps for Windows programs.

In the Fix problems using Windows Update window, choose if you want to allow the PC to automatically restart 15 minutes after the installation completes. Select OK when you’re ready to start the installation. The reinstall will take you to the Windows Update page in Settings.

Here are some things you can try to fix upgrade and installation errors: An error that begins with 0xC1900101 is usually a driver error. If you see any of these error codes, try the following steps first to fix the problem. If these steps don’t work, see Resolve Windows upgrade errors for more detailed technical info.

Use this tool if your device hasn’t received a feature update automatically through Windows Update. Download the Windows Update Assistant. What does Windows Update Assistant do? When to use the Windows Update Assistant? Use the Windows Update Assistant if:

Describes the new and improved features of Microsoft Windows Installer 4.5. The article also discusses the issues that are addressed from earlier versions of Windows Installer.

Start your device from the USB drive that was created with Recovery Drive. The process to boot from a USB drive may vary by manufacturer, so refer to your device's manual if needed. Create a recovery drive to reinstall Windows in case you experience a major issue such as hardware failure.