Follow these steps carefully:
Type the following command and press Enter: regsvr32 C:\Windows\System32\fast2001.ocx (If you are on a 64-bit system, you might need to use C:\Windows\SysWOW64\fast2001.ocx instead).
: The file exists on your hard drive, but Windows doesn't "know" it's there because it hasn't been registered. fast2001.ocx
does the error happen (opening the app, during a specific action)? Are you running Windows 10 or 11 ? Share public link
The fast2001.ocx file is an OLE (Object Linking and Embedding) Control Extension, commonly known as an ActiveX control. Follow these steps carefully: Type the following command
If you find a legitimate version, copy it to C:\Windows\System32 (for 32-bit Windows) or C:\Windows\SysWOW64 (for 64-bit Windows).
but specifically follows the Component Object Model (COM) for embedding functionality into host applications like Visual Basic 6 or Internet Explorer. Registration : For an application to use it, the file must be registered in the Windows Registry using the Typical Errors Are you running Windows 10 or 11
This filename appears to be an OCX file (OLE Custom Control), which is a legacy component format used in older Windows applications, often with Visual Basic 6, Visual C++, or other COM-based technologies. OCX files are essentially ActiveX controls.
The fast2001.ocx file is not a standard part of the Windows operating system. It is installed on your computer only if you, or a piece of software, installed the FASTWin application.
Unable to register the DLL/OCX: RegSvr32 failed with exit code 0x3
: Sometimes, specific .ocx files are referenced in cybersecurity blogs analyzing how older threats used legitimate-looking ActiveX controls to perform unauthorized actions.