Answer
PROBLEM
GFI MailEssentials fails to perform automatic or manual updates. The following errors are logged in the AutoUpdate log file:"error ","AutoUpdate","error: exception: Remoting configuration failed with the exception 'System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Net.Sockets.SocketException: Only one usage of each socket address (protocol/network address/port) is normally permitted
ENVIRONMENT
- GFI MailEssentials
- all supported environments