When trying to log in to the Manage Signatures App, you get an error similar to the one below:
Error occurred during logon. Try logging in again. An error occurred while sending the request. The remote server returned an error: (407) Proxy Authentication Required.
It looks like the program cannot connect to the CodeTwo Email Azure Service. The connection might be blocked by your firewall or other applications. Try the following:
- Make sure that HTTPS connections are open for the following hosts:
- and for the FQDN of your CodeTwo geo location. You can find it here.
- If you connect via a proxy server, either ensure that the proxy connection satisfies the authentication requirements, or disable this connection.