Port 80 Availability Check

 
 
 

If this check fails, another application is using port 80. Autodesk Vault Server needs port 80 to be free for successful installation and operation.

  1. From the Windows Start menu, select Run.
  2. In the Run dialog box, enter: cmd.
  3. Click OK.
  4. In the command window, enter: netstat -ano
  5. A list of active connections is displayed. Locate the active connection that is using local address 0.0.0.0:80 and note the process ID (PID) number. For example:
    Proto Local Address Foreign Address State PID
    TCP
    1. 0.0.0:80
    1. 0.0.0:0
    LISTENING 1924
  6. Start Windows Task Manager and select the Processes tab.
  7. If the PID column is not displayed, from the View menu, select Select Columns. In the Select Columns dialog, turn on the PID (Process Identifier) check box and then click OK.
  8. Locate the process matching the PID that is using 0.0.0.0:80.
  9. Make sure that it is safe to shut down the process and then shut it down.

For more information, see Microsoft Knowledge Base Article 281336: "How to determine which program uses or blocks specific transmission control protocol ports in Windows":