While extending existing SharePoint web application to change its port is one option, there is an another workaround to change port of SharePoint web applications (Applies to both SharePoint 2010 / SharePoint 2007).

How to change SharePoint web application port number?

We can change the port of a SharePoint web application, by performing these two steps:

  1. Change IIS Bindings
  2. Edit Alternate Access Mapping

So, here is the scenario: We have a SharePoint 2010 web application running on port 85 at URL: http://intranet.crescent.com:85, and would like to change the port from 85 to 80 to support publishing it over the internet.

how to change sharepoint web application port number

Step 1: Change IIS Bindings:

  • Go to IIS Manager, Expand the “Sites” node
  • Right click on your target web application >> choose “Edit Bindings”
    change sharepoint 2010 web application port number
  • Select the bindings associated, Click on “Edit” 
    change web application port in sharepoint 2010
  • Change the port from 85 to 80 and update the bindings.

Step 2: Edit Alternate Access Mapping:

  • Open Central Administration >> System Settings >> Alternate Access Mapping
  • Select the target web application 
  • Click on “Edit Public URL” and change the Default zone URL from: http://intranet.crescent.com:85 to http://intranet.crescent.com
    change port of sharepoint 2010 web application
  • Click “OK” to save changes. That’s all! We’ve changed SharePoint web application port number from 85 to 80.

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