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You are not authorized to view this page error when you try to access the Microsoft Dynamics CRM Web site

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This article provides a resolution for the issue that you may receive the You are not authorized to view this page error that occurs when you try to access the Microsoft Dynamics CRM Web site.

Applies to:   Microsoft Dynamics CRM 2011
Original KB number:   917818

Symptoms

When you try to access the Microsoft Dynamics CRM Web site, you are prompted for domain credentials three times. Then, you receive the following error message:

You are not authorized to view this page.

HTTP Error 401.1 - Unauthorized: Access is denied due to invalid credentials.

Cause

This problem may occur when either of the following conditions is true:

  • The Microsoft Internet Information Services (IIS) authentication for the Microsoft Dynamics CRM Web site is not configured to use Kerberos authentication.
  • The Microsoft Dynamics CRM Web site is configured to use host headers.

Resolution

To resolve this problem, follow these steps.

Determine the identifier that the Microsoft Dynamics CRM Web site uses

  1. On the Microsoft Dynamics CRM server, select Start, select Administrative Tools, and then select Internet Information Services (IIS) Manager.

  2. Expand the Microsoft Dynamics CRM computer name, and then select Web Sites.

  3. Select the Microsoft Dynamics CRM Web site, and then note the value in the Identifier column.

    Note

    If you installed Microsoft Dynamics CRM on the default Web site, this value is 1.

  4. Verify the Microsoft Dynamics CRM Web site identifier. To do this, follow these steps:

    1. Select Start, select Run, type regedit, and then select OK.

    2. Locate the following registry subkey:

      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSCRM

    3. Select website, and then note the value in the Value data field.

      Note

      The value resembles /LM/W3SVC/1. The last number is supposed to be the same as the Web site identifier that you noted in step 3.

Configure IIS to use Kerberos authentication for the Microsoft Dynamics CRM Web site

  1. Select Start, select Run, type cmd, and then select OK.

  2. At the command prompt, type the following command, and then press Enter:

    C:\Inetpub\AdminScripts\adsutil.vbs get w3svc/1/NTAuthenticationProviders

    Note

    In this command, 1 represents the value that you determined in the Determine the identifier that the Microsoft Dynamics CRM Web site uses section.

    The result states that the authentication is not set at this level or that the authentication is set to NTAuthenticationProviders: (STRING)"NTLM." Therefore, you have to set Kerberos authentication.

  3. At the command prompt, type the following command, and then press Enter:

    C:\Inetpub\AdminScripts\adsutil.vbs set w3svc/1/NTAuthenticationProviders "Negotiate,NTLM"

    Note

    In this command, 1 represents the value that you determined in the Determine the identifier that the Microsoft Dynamics CRM Web site uses section.

  4. To verify that Kerberos authentication is set correctly, type the following command at the command prompt, and then press Enter:

    C:\Inetpub\AdminScripts\adsutil.vbs get w3svc/1/NTAuthenticationProviders

    Note

    In this command, 1 represents the value that you determined in the Determine the identifier that the Microsoft Dynamics CRM Web site uses section.

    The result is as follows:

    NTAuthenticationProviders: (STRING)"Negotiate,NTLM"

  5. Restart the Microsoft Dynamics CRM server.

Note

You can use a host header to access the Microsoft Dynamics CRM Web site. If you do this, you must also follow the instructions in this article to resolve the problem.