Configure Windows SharePoint Services to work with Remote Web Access
When you install Windows SharePoint Services x64 3.0 with Service Pack 2 (SP2) on Windows SBS 2011 Essentials, you must make the changes in the following procedure so that Remote Web Access and Windows SharePoint Services can work side-by-side.
To configure Windows SharePoint Services x64 3.0 with SP 2
Download Windows SharePoint Services x64 3.0 SP2 from the Microsoft Download Center (https://go.microsoft.com/fwlink/?LinkId=215634).
Install Windows SharePoint Services on Windows SBS 2011 Essentials, and finish the SharePoint Products and Technologies Configuration Wizard using the default settings.
Change the port binding for the Windows SharePoint Services site:
Click Start, click Administrative Tools, and then click Internet Information Services (IIS) Manager.
In the Connections pane, expand <ServerName>, expand Sites, and right-click SharePoint – 80, and then click Edit bindings.
Click http 80, and then click Edit.
Change the port number from 80 (default) to any unused port number (for example, 999), and then click OK.
Click Close.
In the IIS Manager Connections pane, click SharePoint Central Administration v3, and then in the Actions pane, click Browse: <PortNumber> (http). The SharePoint Central Administration website opens.
Under Central Administration, click Operations. If asked, type your administrator credentials.
Under Global Configuration, click Alternate access mappings.
To edit the existing internal URL, click http:// <ServerName>. The Edit Internal URLs webpage is displayed.
In the URL protocol, host and port text box, change the URL to http://<ServerName>:xxx, where xxx is the port number that you used in step 3d, and then click OK. For example, http://ContosoServer:999.
Close the Central Administration website.
To start the default website, in the IIS Manager Connections pane, click Default Web Site, and then in the Actions pane, under Manage Web Site, click Start.