Article ID: 125436, created on May 5, 2015, last review on Sep 18, 2015

  • Applies to:
  • Plesk for Windows


Migration from Plesk 9.5.4 is failed to start. The following error can be found in '%plesk_dir%\PMM\msessions\12..34\migration.log':

System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed  because connected host has failed to respond <source_server_IP>:6489


  1. Firewall blocks traffic on source port 6489.

  2. Traffic is filtered by intermediary host.


  1. Check if source server port 6489 is allowed in windows firewall.

  2. Check if it is accessible from destination server. Telnet should establish the connection:

    telnet <source_server_IP> 6489
    Connecting To <source_server_IP>...

Search Words

connected host has failed to respond

connection attempt failed


I cannot start migration

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