Resolution 1:
1. Open Internet Information Services Manager on the Microsoft Dynamics CRM 2011 Server. To do this, click Start, click Administrative Tools, and select Internet Information Services (IIS) Manager.
2. In the navigation pane, expand the server name, and then expand sites.
3. Select the Microsoft Dynamics CRM web site, and then in the Features View, double click Authentication.
4. Select Anonymous Authentication, and then in the Actions menu, click Enable.
5. Perform an IISRESET. To do this, click Start, click Run, and enter "iisreset" without quotations in the Run dialog box, and click Ok.
Resolution 2:
1. Open the CRM Deployment Manager. To do this, click Start, click All Programs, click Microsoft Dynamics CRM 2011, and click Deployment Manager.
2. Right click Microsoft Dynamics CRM, click Properties, and select the Web Address tab.
3. Verify that the URL that is being used to configure the client is the same as the URL that is set for the Web Address values.
Resolution 3:
1. Click Start, Click Run, and Type in inetmgr.
2. Expand Sites and click on the Microsoft Dynamics CRM website.
3. In the Actions Pane, click on Bindings.
4. In the Site Bindings window, ensure that there is only one http or one https binding type.
Note: The binding that should remain is the binding that is defined in the Deployment Manager. To check for the correct URL, open Deployment Manager, right-click on Microsoft Dynamics CRM, click Properties, and click the Web Address tab. If IFD is used, the certificate matching your IFD settings should be kept.