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.

If you can't find an app or program, try the tips in See all your apps in Windows 10 and Program is not listed in add/remove programs after installation. If you get an error message when you're uninstalling, try the Program Install and Uninstall Troubleshooter.

The Microsoft Defender Offline scan will automatically detect and remove or quarantine malware. Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems.

Use the 32-bit installer if you’re using a 32-bit version of Windows and the 64-bit installer with a 64-bit version of Windows. To determine which version of Windows you’re using, follow the steps in Method 1 or 2. If one method doesn’t work, try the other.

Your PC isn't working well and you recently installed an app. Restore from a system restore point. You suspect your device has been infected. Use installation media to reinstall Windows 11. Select one of the recovery options below and follow the steps to try to get things working again.

Find out how to choose between the 64-bit or 32-bit version of Office. Get answers to some common questions about 32-bit and 64-bit versions of Windows.

After installing this update, you might be unable to change your user account profile picture. When attempting to change a profile picture by selecting the button Start > Settings> Accounts > Your info, and then selecting Choose a file, you might receive an error message with error code 0x80070520.

Fix-it tools aren’t used in Windows 10. Instead, use a troubleshooter to help solve problems with your PC.

Start System Information connected to a remote computer. Use the following syntax in the command prompt to run the MSINFO32 command on computers that are running Windows 7, Windows 8.1, and Windows 10: Msinfo32 [ /nfo Path] [ /report Path] [ /computer ComputerName] Parameters Path.