Install and Export Client Certificate

From Microsoft Windows, click Start.
In the Search programs and files field, type certmgr and select Manage computer certificates.
Go to the Certificates -Local Computer > Personal > Certificates folder in the Certificate tree.
Right-click on the Certificates and select All Tasks > Import.

Import client certificate

Select the signed certificate file that you have downloaded from CMS Web and click the Open button.

Select client certificate

On Certificate Import Wizard click the Next button.

Certificate Import Wizard

Select Personal as certificate store and click Next.

Select Certificate Store

Click on Finish.

Finish window

You will get a message Import Successful.

Refresh the certificate list and you will notice the presence of your new certificate, with a key icon over the certificate icon to indicate the presence of a private key.

Verifying installed certificate

Export the newly generated certificate, right-click on tntadmin-1 certificate and Select All Taks > Export...

Selecting Certificate to export

Click the Next button to continue.

Certificate Export Wizard

Select Yes, export with private key option and click the Next button.

Selecting export with private key

Select Include all certificates in the certification path if possible and Export all extended properties.
Click on the Next button.

Certificate Export Wizard for file format

Check the Password option and enter any strong password. Click Next.

Enter the password

It will ask to save the certificate with key file. Click Browse
Select location and provide file name.

Save certificate

Again, click Next.

Certificate Export wizard

Click the Finish button.

Certificate Export Wizard finish window