1. Open “Control Panel” from Start button.
  2. Click on "Small icons" in Control Panel and open java.

        3. Once  Java control panel is opened, click on java and View button.

                          Add below value ”-Djava.net.preferIPv4Stack=true” in Runtime parameters. Click on Ok.

        4. Launch HySecure Client and click on Action  ---> Preferences and check the box of “Use hosts file for name resolution" and Click on Ok

   5. Go to System Properties > Advanced system settings > Environment Variables > System Variables > Add the new system Variable as shown in below image:
                  Variable Name: _JAVA_OPTIONS
                  Variable value:  -Djava.net.preferIPv4Stack=true

6. After adding, restart the PC and then login back to HySecure client.