Issue due to which client is not connecting with server which is because of the corruption of native client in server. Refer the screen shot below where no values found.
At the same time we can't login into the OSQL due to this. Refer the screen shot below
For this we have to reinstall the native client setup. Please run the SQLEXPR.EXE meanwhile all its components are extracts to a folder at first and cancel the setup(This is only to get the native client set up).
Navigate to that folder and run the set up sqlncli.msi (Refer screen shot below)which ask you to uninstall the previous native client and then install the new one.
After installing it looks like the screen shot below.
Now the client will connect with server machine and works normally.