Host Asp.net web application on windows server 2012

I had a web application (ClientApp) which I hosted on my client's windows server 2012 and it takes port 80 and 443 (SSL).
It can be  access by https://www.mydomain/ClientApp URL

Now he made me create a new application and wanted to host on the same server.
It should be access by https://www.mydomain/ClipDealers URL

I need to know on IIS do I need to create a new web site or I need create a new web application inside the existing ClientApp web site?
As ClientApp has already taken port 80 and 443
yadavdepAsked:
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Emmanuel AdebayoGlobal Windows Infrastructure Engineer - ConsultantCommented:
All you need to do is to create a new web application inside the existing web apps, https://www.mydomain/ClientApp. This is done by creating a new virtual directory / application

Open the IIS Manager by selecting Control Panel > Administrative Tools > Internet Information Services (IIS) Manager

"Right click" on the ClientApp Web Site node/branch and select Add application from the pop-up menu. The properties for a new application will be displayed. Enter the information needed to complete the task.
yadavdepAuthor Commented:
Emmanuel,

I did as you said but when I browse the site I got 500 internal server error.

Please note this new application has its own config file as it is a separate application
Emmanuel AdebayoGlobal Windows Infrastructure Engineer - ConsultantCommented:
Was there any error logged in the Application/System Event logs?

Check the URL below to troubleshoot
https://support.microsoft.com/en-us/kb/942031
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yadavdepAuthor Commented:
I noticed the error was coming because I had assigned a new application pool my new web application.
When I used  the same which I was using for the older one, the new application started working.

But still is it possible to use a different application pool for my new application?
Emmanuel AdebayoGlobal Windows Infrastructure Engineer - ConsultantCommented:
Yes, it's possible to assign different application pool.

Check the configuration of the existing app pool and configure the new app pool the same way.

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yadavdepAuthor Commented:
Thanks for helping me out here.
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Windows Server 2012

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