Unable to open Published application: Code 02/00000003

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Symptoms

  1. An attempt to open a published application results in the following error:

    Code 02/00000003. The client could not access the remote application...

Cause

Resolution

  1. On Terminal server open services.msc applet and start Remote Desktop Services service.

  2. On Terminal server check the following Windows Registry entry:

    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP Tcp\PortNumber
    
  3. Make sure its decimal value matches the port specified in Parallels Remote Application Server console > Farm > Terminal Servers > Terminal server properties > Agent Settings > Port.

NOTE: if system RDP port has been recently changed on Terminal server, restart of Remote Desktop Services service is required.

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