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.

First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open. The troubleshooter provides steps for you to follow. If a program isn't listed in the uninstall options, you'll be asked for that program's product code.

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.

Learn how to use the DxDiag.exe tool to collect system information useful for troubleshooting problems with Microsoft Casual Games.

Provides links to the uninstall tools and directions for many security programs.

Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see Covered malware families). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

You can use the Wilogutl.exe tool to analyze log files from a Windows Installer installation. This tool may suggest solutions to errors that are found in a log file.

Learn how to get older apps or programs to run on Windows 10 or Windows 11 by adjusting compatibility settings.

To help determine the cause of the problem, a stop code, such as PAGE_FAULT_IN_NONPAGED_AREA or MEMORY_MANAGEMENT will appear at the bottom of the screen, and if available, the module name of the code that was being executed at the time the problem occurred.

Learn how to run System File Checker in Windows to check if your computer has problems with files.