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ElectricCommander install on Windows fails with "Port 80 unavailable" error message.

When I try to install ElectricCommander on Windows, after selecting the type of install, if it is going to include the web server, it gives me the error message "Port 80 unavailable" and refuses to proceed. I already uninstalled IIS. What now?

avatar image By juan 1.2k asked May 23, 2014 at 03:06 PM
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In order to install the Apache web server that comes with Commander, the install needs to know that port 80 (the standard HTTP service port) is available. If not, it will tell you so. The most common cause for this is having the IIS service installed and running. You will need to remove this by going to:

 Control Panel
 Programs and Features
 Turn Windows Features On and Off

You will then need to disable IIS, or possibly just the World Wide Web Publishing service. The system may ask you to reboot to complete the change.

If that doesn't work, open up a Command window in "Run as administrator" mode and type this command:

 netstat -a -b -o | grep ":80"

This will show you a list of all the programs and services that are listening on port 80, as well as their PIDs (process ID's). If it is a program that it is running, it will have to be shutdown. If it is a service, it will have to stopped.

Possibilities for services that may be using port 80 include:

  • IIS

  • World Wide Web Publishing service

  • IIS Admin Service

  • SQL Server Reporting services

  • Web Deployment Agent service

Run the netstat command shown above to verify that no program or service is listening to port 80, and then repeat the Commander installation.

If you do not wish to disable whatever program or service is currently using port 80, you will have to tell the installer to proceed in the advanced install mode and, when prompted, select a different port of your preference for Commander's web server.

avatar image By juan 1.2k answered May 23, 2014 at 03:15 PM
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