Go to Start > control panel > open Java
                                                    Step 1 : Go to security Tab
                                                    1) Change the security Level to medium
                                                    2) Click on Edit site list (A new window will open)
                         
    Step 2 : Click on add button to add the website (from where you are accessing the PKI component) 
    Click on OK to apply settings.
Step 3: Add the URL in the list (from where you are accessing the PKI component)
Step 4 : Screen after settings
Step 5 : Go to general tab and click on Settings
Step 6 : Click on delete files
Step 7: Select all the check boxes and click OK
Step 8: Apply setting and access the website in you browser