Solve Error "cannot open file C:\WINDOWS\system32\comdlg32.ocx"

for Windows XP, 2000 and Windows 7 32bit version:

Download the Comdlg32.ocx file and save it to C:\Windows\System32

open a Command Prompt windows as Adminstrator:

 type the following commandin the window:

REGSVR32  C:\Windows\System32\comdlg32.ocx

If you see a message like this you have successfully install it:

DllRegisterServer in C:\WINDOWS\System32\comdlg32.ocx succeeded.
 

Restart Windows, and then launch your MS-Excel again.

for Windows 7 64bit version:

Download the Comdlg32.ocx file and save it to C:\Windows\SysWOW64

open a Command Prompt windows as Adminstrator:

 type the following commandin the window:

REGSVR32  C:\Windows\SysWOW64\comdlg32.ocx

If you see a message like this you have successfully install it:

DllRegisterServer in C:\Windows\SysWOW64\comdlg32.ocx succeeded.
 

Restart Windows, and then launch your MS-Excel again.

if you fail in register, please start the sevice of "ActiveX Installer (AxInstalSrv)" as administrator in the:

Start menu->Control Panel->System and security->Administrative Tools->Conponent Service

Then repeat register the comdlg32.ocx.

Hint:

If you have still problem in using the common dialogue to select your file, simply type you file path and name in the text box,  then click the convert button.