SFC.exe is a command-line tool that scans and repairs missing or corrupted system files in Windows. Learn how to run SFC.exe, view the scan results, and manually replace corrupted files with a known good copy.

Learn how to protect your Windows server from a critical remote code execution vulnerability that affects the DNS Server role. Find out how to apply a security update and a registry-based workaround to restrict the size of inbound TCP-based DNS response packets.

Windows 11 servicing stack update (KB5043143) - 22621.4245 and 22631.4245. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

Learn how to use a troubleshooter to diagnose and repair Windows security problems by turning on UAC, DEP, Windows Firewall, and other features. The troubleshooter works for Windows 7, 8, 8.1, and 10 in different languages.

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 Windows 10 and other versions of Windows.

Learn how to use the Program Install and Uninstall troubleshooter to fix corrupted registry keys, blockages, and errors when you try to install or uninstall programs on Windows. Download the troubleshooter and follow the steps it provides.

Learn how to optimize your Windows device by customizing which applications launch on startup. Find different ways to configure startup applications from Settings, Task Manager, or File Explorer, and fix common errors.

Learn how to download and install the .NET Framework 4.6.2 Developer Pack and its language packs for Windows 7, 8.1, 10 and Server. The package includes the .NET Framework 4.6.2, the .NET 4.6.2 Targeting Pack, and the .NET Framework 4.6.2 SDK.

This update improves the component that installs Windows updates and fixes an issue with the CVE-2020-0689 security vulnerability. It is available through Windows Update, Microsoft Update Catalog, or Windows Server Update Services.

Learn how to get the latest servicing stack update for Windows 11, which improves the quality and reliability of Windows updates. This update is available through Windows Update and cannot be uninstalled.