What is regsvr32.exe?

Regsvr32.exe is Microsoft© Register Server.

This file is part of Microsoft Windows Operating System. Regsvr32.exe is developed by Microsoft Corporation. It’s a system and hidden file. Regsvr32.exe is usually located in the %PROGRAM_FILES_COMMON% sub-folder and its usual size is 11,776 bytes.

Regsvr32.exe is a Microsoft Windows operating system command-line utility for registering and unregistering self-registerable DLLs and ActiveX controls in the Windows registry. A DLL has to export the functions DllRegisterServer and DllUnregisterServer to be used with regsvr32.exe. This is usually necessary when you need to troubleshoot some issues with Windows, Internet Explorer, or other programs.

Regsvr32.exe is included with Internet Explorer 3.0 and later versions, Windows 95 OEM Service Release 2 (OSR2) and later versions, and Windows NT 4.0 Service Pack 5 (SP5) and later versions. Regsvr32.exe is installed in the System folder in Windows Me/Windows 98/Windows 95 or the System32 folder in Windows NT/Windows XP/Windows Vista/Windows 7. There are two versions of the Regsv32.exe file on 64-bit versions of Windows:

a. The 64-bit version is %systemroot%\System32\regsvr32.exe.
b. The 32-bit version is %systemroot%\SysWoW64\regsvr32.exe.

For more information on how to use regsvr32.exe and how to fix common regsvr32.exe errors, refer to this Microsoft KB article.

Important: malware can mask itself as regsvr32.exe. Scan your PC with Auslogics Antivirus to make sure it's not infected.