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Error: 'Only one usage of each socket address is permitted' is found in logs when updates are failing ( ONLY)

Author: Luis Fernandes

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

SOLUTION

Please adjust the max user port to a value higher than 5000 which would rectify the error. Reference: http://msdn.microsoft.com/en-us/library/aa560610%28v=bts.20%29.aspx 

CAUSE

Only one usage of each socket address (protocol / network address / port) is permitted. It means that there is a number of dynamic ports which are used for overloading ( typically 5000 ). If that runs out, the above mentioned error gets thrown out.
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