Thanks, jephree.

I followed the steps and check:

1. Click on start -> Run -> type "regsvr32.exe /i shdocvw.dll" without the
quotes.
2. You should see a dialog box.
3. Press OK then reboot the system.

But it didn’t resolve my problem.

Then I followed the steps and check if the issue is resolved:

1. Regsvr32.exe /i shdoc401.dll
It gave me the message “LoadLibrary("shcod401.dll)failed- the specified module could not be found. “

2. Regsvr32.exe shdoclc.dll
It gave me the message "shdoclc.dll was loaded but the DLLRegisterServer entry point was not found. DllRegisterServer may not be exported, or a corrupt version of shdoclc.dll may be in memory. Consider using PView to detect and remove it."

I need your help.
thanks.