Register ActiveX DLL or OCX Files on 64-BIT Windows

regsvr32 c:\WINDOWS\system32\WebAgent4.ocx
Screenshot 2015-06-17 13.52.17

 

If you receive an error when registering a 32-bit DLL or OCX on a 64-bit version of Windows, follow these steps:

 

1. Open an elevated command prompt – its important the command window has Administrator access otherwise you will continue to see errors:

 

in Windows Vista or 7:
Select Start > All Programs > Accessories
Right-click on “Command Prompt” in the Accessories
Click “Run as Administrator”

 

in Windows 8:
Open the “Quick Link” menu (by holding down the Windows 8 logo key  and pressing the X key)
Select “Command Prompt (Admin)”
Select “Yes” to allow changes

 

2. If the 32-bit DLL or OCX is in the %systemroot%\System32 folder, move it to the %systemroot%\SysWoW64 folder.

 

3.Run the following command:
%systemroot%\SysWoW64\regsvr32 <full path of the DLL or OCX>


In my example this would be: %systemroot%\SysWOW64\regsvr32 C:\Windows\SysWOW64\WebAgent4.OCX
Screenshot 2015-06-17 13.56.25


^Source: https://support.microsoft.com/en-us/kb/249873
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