Do you have AVG Antivirus/AVG Internet Security running on your PC? You recently installed Trust.Zone VPN Client, but DHCP request failed error was appearing each time when client was trying to connect? Here is solution how to get rid of the problem.

Step 1: Click connections icon and open Network and Sharing Center
 
 Step 2: Click Change adapter settings
 
 Step 3: Left click on VPN - VPN Client adapter, then right-click on it, then click Properties
 
 Step 4: Turn off AVG network filter driver checkbox and click OK
 
 Step 5: Your Trust.Zone VPN Client should be able to connect now!
