If you are trying to access a VPN enviorment using the Juniper Networks Netowrk Connect tool. One of the resons might be tha you were disconnected from the server and on reconnect you face the error:
This can be overcome by terminating the following processes in the Task Manager.
1. Press CRTL + ALT + Delete on your keyboard to bring up the Windows Task Manager.
2. Terminate the following two processes to try to reconnect through the Juniper Networks app.