How to do that ?

Using Command prompt ?

Click the Start button.

Type "command" in the search box... DO NOT hit ENTER yet!

While holding CTRL-Shift on your keyboard, hit ENTER.

You will be prompted with a permission dialog box.

Click Yes.

Type the following command: regsvr32 /u sqlncli.dll.

Hit ENTER. This will UN-REGISTER your file.

Type the following command: regsvr32 /i sqlncli.dll.

Hit ENTER. This will RE-REGISTER your file.

Close the command prompt window.

Re-start the program associated with sqlncli.dll error.

I tried it but during Re-Registration its giving an error.