Learn how to use the Program Install and Uninstall troubleshooter to fix corrupted registry keys, prevent programs from being installed or removed, and access the product code. The troubleshooter runs on Windows 10, 8.1, 8, and 7.

Learn how to use the System File Checker tool (SFC.exe) to scan and restore Windows system files that are not working or causing crashes. Follow the steps to run SFC.exe, view the scan results, and manually replace the corrupted files if needed.

Learn different ways to remove apps and programs from your Windows 10 or 11 device. Find tips for troubleshooting, repairing, and removing malware.

Learn how to use Microsoft Defender Antivirus to scan and remove malware from your PC. Follow the steps to run an offline scan, view the results, and take action against detected threats.

Learn how to turn on the pop-up blocker feature in Edge to prevent websites from opening unwanted windows or tabs. Find out how to allow pop-ups for specific URLs and what to do if you still see pop-ups.

Learn how to configure and use Windows Security to protect your PC from PUA, a category of software that can slow down your machine or display unwanted ads. Windows Security can block PUA as you download or install them, and notify you to take action.

Learn how to stop Windows Security from alerting you or blocking a trusted file, file type, folder, or process by adding it to the exclusions list. Follow the steps for Windows 11 or Windows 10 and choose from files, folders, file types, or process options.

Learn how to use PC Health Check app to check your device health, Windows 11 eligibility, and troubleshoot performance issues. Find out how to install, update, and access the app features and settings.

Learn how to restore files from a backup or a previous version after you can't find them on your computer or you deleted them by mistake. Follow the steps to access previous versions of files and folders from Windows Backup or restore points.

Regsvr32 is a command-line utility to register and unregister OLE controls, such as DLLs and ActiveX controls in the Windows Registry. Learn the syntax, options, and common solutions for Regsvr32 errors in different versions of Windows.