You are receiving a 407 error when you try to connect to our service.
- Contact your IT department and provide the full 407 error message, to help them determine the specific area which needs to be addressed.
Note: AvaTax does not use a proxy; all proxy errors are a result of your local network configuration. The general solution is to ensure port 443 is open. Verify that the AvaTax domain is not blocked on your network and is resolving through public DNS servers.