The installation file is typically named Autorun.exe or Setup.exe, but this may vary. If you're not sure, check the Readme file in the folder for instructions about how to run the installation.

Use the System File Checker tool to repair missing or corrupted system files. When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether.

Using this tool will reinstall the current version of Windows on your device. This tool preserves all your apps, documents, and settings. Make sure to keep your PC connected to a power source and the internet during reinstallation. The reinstall will take you to the Windows Update page in Settings.

Learn how to create installation media for installing or reinstalling 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.

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 how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Microsoft Windows Installer is a component of your Windows operating system that provides a standard foundation for installing and uninstalling software. Software manufacturers can create their product setup to use the Windows Installer to make software installation, maintenance, and uninstallation straightforward and easy.

There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.

When you start Wusa.exe in interactive mode, a welcome screen displays high-level information about the update. If you continue to install the update, Wusa.exe calls the appropriate function in the Windows Update Agent API to start the Windows Update wizard.