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I have two Solutions in visual studio 2015: CDN and a website.

CDN applicartionhost.config are in C:\xxxx\CCC\CCC\Dev\CCC\.vs\config

Site Config:

            <site name="CCC.Web" id="1" serverAutoStart="true">
            <application path="/" applicationPool="Clr4IntegratedAppPool">
                <virtualDirectory path="/" physicalPath="C:\XXXX\CCC\CCC\Dev\CCC\CCC.Web" />
            </application>
            <bindings>
                <binding protocol="http" bindingInformation="*:80:www.trueq.com.co" />
            </bindings>
        </site>

Website applicartionhost.config are in C:\xxxx\YYY\YYY\Dev\YYY\.vs\config

Site Config:

 <site name="YYY" id="1" serverAutoStart="true">
            <application path="/" applicationPool="Clr4IntegratedAppPool">
                <virtualDirectory path="/" physicalPath="C:\XXXX\YYY\YYY\Dev\YYY\YYY" />
            </application>
            <bindings>
                <binding protocol="http" bindingInformation="*:80:tq.pastatic.com" />
            </bindings>
        </site>

When I run one solution it runs fine, but when I try to run the other it shows an error: Unable to launch the iis express web server port 80 is in use.

I don't know what to do.

I tried uninstall and reinstall IIS 10, delete both applicartionhost.config, change ports, nothing works.

BrennQuin
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Jaime Rivera Contreras
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1 Answers1

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You cannot have two processes listening at the same TCP port.

When you two solutions, you have two instances of IIS express running.

In (the real) IIS, you can use the hostname to switch to different sites, because it is only one process listening.

GvS
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