Hallo, Curtis!
You mean this connection/adapter/network?:
This one is needed to SecureLine connect to the selected server. All VPN services creates a separated network to the same purpose.
In your case...
You said
"every time i switch my avast Secureline on", so, when you switch on your VPN, this network, which should work with no problems, is not allowing you to use your VPN properly.
Am i right? Did i understand correctly?
Because, when you switch on your SecureLine VPN, it's normal that this
"avast! SecureLine Tap Adapter" turns on automatically, because this service needs it.