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.

Learn how to troubleshoot Windows Hello sign in issues, error messages, or facial recognition.

Some user machines that have upgraded from Windows 10 and are now running Windows 11, version 21H2 or higher which have a fingerprint sensor with certain ELAN fingerprint drivers could encounter a failure or crash when using applications which rely on related DLLs. Which drivers are these?

Learn how to sign into your PC with Windows Hello using a PIN, facial recognition, or fingerprint.

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.

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.

To resolve this problem, try to identify and remove deceptive software from your computer. To do this, use one or all the following methods. Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.

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.

Common causes include missing drivers after a recent update, antivirus software blocking the camera, restrictive privacy settings, or issues with the app you're trying to use. This article provides a step-by-step guide to help you troubleshoot and resolve camera problems effectively.