Each release of the tool helps detect and remove current, prevalent malicious software. This malicious software includes viruses, worms, and Trojan horses. Microsoft uses several metrics to determine the prevalence of a malicious software family and the damage that can be associated with it.

Regsvr32 is a command-line utility to register and unregister OLE controls, such as DLLs and ActiveX controls in the Windows Registry. Regsvr32.exe is installed in the %systemroot%\System32 folder in Windows XP and later versions of Windows. The 64-bit version is %systemroot%\System32\regsvr32.exe.

You can use installation media (a USB flash drive or DVD) to install a new copy of Windows, perform a clean installation, or reinstall Windows. To create installation media, go to the software download website, where you'll find step-by-step instructions.

If installation doesn't start automatically, browse the disc to find the program setup file, usually called Setup.exe or Install.exe. Open the file to start installation. Insert the disc into your PC, and then follow the instructions on your screen.

To resolve this issue, you can reset the registry settings to their default settings. To do this, follow these steps. Click the Startbutton and type regedit in the Search box. Right-click Regedit.exe in the returned list and click Run as administrator. Browse to the following registry key:

When you start your computer successfully, the Windows Registry Checker tool (Scanreg.exe) creates a backup of system files and registry configuration information (including user account information, protocol bindings, software program settings, and user preferences) once daily.

Fixes an issue in which the Splwow64.exe process does not end when you print by using a 32-bit program in the 64-bit version of Windows 7 or Windows Server 2008 R2.

Install the Support Tools by running Setup.exe from the Support\Tools folder on the CD-ROM. By default, Dumpchk.exe is installed to the Program Files\Support Tools folder. Dumpchk has the following command-line options: DUMPCHK [options] <CrashDumpFile>.

Windows 10. This tool is used to collect info about devices to help troubleshoot problems with DirectX sound and video. A support person might ask for this info, or you might post it in a forum when you ask for help. In Windows, select Start and enter dxdiag into the search box on the taskbar.

This article describes an issue that occurs when you play back an MPEG-4 file in Windows 8.1 or Windows RT 8.1. Before you install this update, see the Prerequisites section.