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.

When you click a link in a program, the link does not work. Your web browser suddenly closes or stops responding. It takes a much longer time to start or to resume your computer. Components of Windows or other programs no longer work.

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.

You can repair some apps and programs if they're not running correctly. Note that you won't see repair, change, or modify options for all apps and programs. Repair options from the Settings page. Select Start > Settings > Apps > Installed apps. Select the More icon next to the app you want to fix.

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

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 troubleshoot problems installing or running games from the Xbox app for PC.

Block apps will detect PUA that you've already downloaded or installed, so if you're using a different browser Windows Security can still detect PUA after you've downloaded it. Block downloads looks for PUA as it's being downloaded, but it only works with the new Microsoft Edge browser. What happens when PUA is detected?

While browsing the Internet or working on your computer after browsing the internet, you may notice that a new window titled PC Repair may open, you are asked to defragment your computer and then asked for personal information such as your email address.

Real-time protection is a feature in the Windows Security app that continuously monitors your device for potential threats such as viruses, malware, and spyware. This feature ensures that your device is actively protected by scanning files and programs as they are accessed or executed.