Checks that Port 80 is available for use.
See Also
Difference between port 8080 and 80 (OCPJWCD forum at Coderanch)Linux: Find Out What Is Using TCP Port 80Port tests: Checking open ports with a port checkWhat is a Port Scanner and How Does it Work?Autodesk Vault Server needs port 80 to be free for successful installation and operation. If this check fails, another application is using port 80.
- From the Windows Start menu, select Run.
- In the Run dialog box, enter: cmd.
- Click OK.
- In the command window, enter: netstat -ano
- 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 - 0.0.0:80
- 0.0.0:0
LISTENING 1924 - Start Windows Task Manager and select the Processes tab.
- 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.
- Locate the process matching the PID that is using 0.0.0.0:80.
- 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":
