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.

Describes how to troubleshoot problems that occur when you install, uninstall, or upgrade a program on a Windows-based computer by using Windows Installer.

Each release of the tool helps detect and remove current, prevalent malicious software. This malicious software includes viruses, worms, and Trojan horses. Microsoft uses several metrics to determine the prevalence of a malicious software family and the damage that can be associated with it.

Set up Kinect for Windows v2 with a Kinect Adapter for Windows 10 PC. If you don't already have an Xbox One Kinect Sensor, you must purchase both a Kinect sensor and the Kinect Adapter for Windows 10 PC.

You can use installation media (a USB flash drive or DVD) to install a new copy of Windows, perform a clean installation, or reinstall Windows. To create installation media, go to the software download website, where you'll find step-by-step instructions.

Windows 8.1. Support for Windows 8.1 has ended. Support for Windows 8.1 ended on January 10, 2023. We recommend you move to a Windows 11 PC to continue to receive security updates from Microsoft. Learn more. Note: For information about this topic in Windows 11 or Windows 10, see Recovery options in Windows.

The Calculator app for Windows 10 is a touch-friendly version of the desktop calculator in previous versions of Windows. You can open multiple calculators at the same time in resizable windows on the desktop and switch between Standard, Scientific, Programmer, Date calculation, and Converter modes.

This update for Microsoft Visual C++ 2013 Update 5 Redistributable Package is released as a download-only update and isn’t distributed through Windows Update. Redistribution of this update is allowed, subject to the same license terms as granted by the Microsoft Visual Studio 2013 Update 5 release. If you statically link to the Visual C++ ...

Windows 10. If installation doesn't start automatically, browse the disc to find the program setup file, usually called Setup.exe or Install.exe. Open the file to start installation. Insert the disc into your PC, and then follow the instructions on your screen. You might be asked for an admin password.

If you have Windows 8.1 or 8.0, type the name of an Microsoft 365 app on the Start screen. Can't find your Office apps? To open the app, select its icon in the search results.