This article describes the support for Microsoft Dynamics CRM 4.0 on Windows Server 2008-based computers.

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Microsoft Dynamics CRM 4.0 is compatible with Windows Server 2008-based computers. The Microsoft Dynamics CRM 4.0 client for Microsoft Office Outlook is supported on Windows Server 2008 when used with Terminal Services or with Citrix. Microsoft Dynamics CRM 3.0 and the Microsoft Dynamics CRM 3.0 client for Outlook are not compatible with Windows Server 2008-based computers. You can install Microsoft Dynamics CRM 3.0 in a Windows Server 2008 domain. However, the computer where you install Microsoft Dynamics CRM 3.0 must be running Windows Server 2003 or Windows Server 2000.

The following versions of Windows Server 2008 are supported:

•	The 32-bit editions of the Windows Server 2008 operating system
•	The 64-bit editions of the Windows Server 2008 operating system
•	The 32-bit edition of Windows Web Server 2008
•	The 64-bit edition of Windows Web Server 2008

The following known issues may occur when you use Microsoft Dynamics CRM 4.0 with Windows Server 2008. Workarounds, if they are available, are also included.

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Error message when you try to open the Microsoft Dynamics CRM 4.0 Web application: "Problems with this Web page might prevent it from being displayed properly or functioning properly"

When you try to open the Microsoft Dynamics CRM 4.0 Web application, you receive the following error message: This problem may occur because you disable the Static Content role service in Windows Server 2008. In Windows Server 2008, you can stop Internet Information Services (IIS) 7.0 components. The IIS 7.0 components are also known as role services.

To work around this problem, enable the Static Content role service. To do this, follow these steps:

1.	Start Server Manager, and then add the Static Content role service from IIS.
2.	Restart IIS. To do this, click Start, click Run, type iisreset, and then click OK.

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Error message when you install Microsoft Dynamics CRM 4.0: "Action Microsoft.Crm.Setup.Server.EnableCompressionAction failed"

When you install Microsoft Dynamics CRM 4.0, the Environmental Diagnostic Wizard (EDW) checks pass. However, the Setup process fails, and you receive the following error message: This problem occurs because the Dynamic Content Compression role service is removed.

To work around this problem, install the Dynamic Content Compression role service. To do this, follow these steps:

1.	Start Server Manager, and then add the Dynamic Content Compression role service from IIS.
2.	Restart IIS. To do this, click Start, click Run, type iisreset, and then click OK.

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Error message when you try to open the Microsoft Dynamics CRM 4.0 Web application: "HTTP Error 401.2 – Unauthorized"

When you try to open the Microsoft Dynamics CRM 4.0 Web application, you receive the following error message: This problem occurs because the Windows Authentication IIS role service is disabled.

To work around this problem, follow these steps:

1.	Start Server Manager, and then add the Windows Authentication role service from IIS.
2.	Restart IIS. To do this, click Start, click Run, type iisreset, and then click OK.

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Error message when you install an SPLA or an IFD of Microsoft Dynamics CRM 4.0: "An invalid IP address was specified"

Consider the following scenario. You install a Service Provider Licensing Agreement (SPLA) or an Internet-Facing Deployment (IFD) in an IPv6-only environment. You set the internalnetworkaddress registry key to an IPv6 address. You try to open the Microsoft Dynamics CRM 4.0 Web application. In this scenario, you receive the following error message: This problem occurs because Microsoft Dynamics CRM 4.0 does not currently support an IPV6-only deployment of Windows Server 2008.

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Error message when you view the User Summary report in Microsoft Dynamics CRM 4.0: "An error occurred during rendering of the report. Unable to cast object of type 'Microsoft.ReportingServices.ReportRendering.Calendars' to type 'System.String'"

When you view the User Summary report in Microsoft Dynamics CRM 4.0, you receive the following error message: This problem occurs because the CRM_CalendarType parameter data type failed.

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Error message when you try to install the Microsoft Dynamics CRM 4.0 Server on Windows Server 2008: "Internet Information Services (IIS) 7 along with IIS 6 Compatibility Components must be installed on Windows Server 2008"

When you try to install the Microsoft Dynamics CRM 4.0 Server on Windows Server 2008, you receive the following error message: This problem occurs when only IIS 7.0 integrated mode is enabled without IIS 6 compatibility mode. This problem occurs because the Compatibility Components role service for IIS 6 is not installed.

Microsoft Dynamics CRM 4.0 only supports IIS 6.0 Compatibility Components. To work around this problem, you must install the IIS 6 Compatibility Components.

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An error message occurs when you install Microsoft Dynamics CRM 4.0: "System.Exception: Action Microsoft.Crm.Setup.Server.ConfigureAspNetAccountAction failed. System.ComponentModel.Win32Exception: The group name could not be found"

Consider the following scenario:

•	You try to install the Microsoft Dynamics CRM 4.0 Server with the Security Accounts to run under a Domain User account on Windows Server 2008.
•	The Microsoft Dynamics CRM 4.0 installation tries to add the domain user to the IIS Worker Process Group (IIS_WPG).
•	Windows Server 2008 runs IIS 7.0. However, Microsoft Dynamics CRM 4.0 uses IIS 6 compatibility mode.

In this scenario, the Setup process fails, and you receive the following error message: This problem occurs because IIS 6 compatibility mode no longer has the IIS_WPG group.

To work around this problem, you must select the Network service to start Microsoft Dynamics CRM 4.0.

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Error message in the EDW: "Failure: An address incompatible with the requested protocol was used"

Consider the following scenario. You try to install the Microsoft Dynamics CRM 4.0 Server in an IPv6-only environment. Then, you configure the Setup process to create the Web site to be used as the Microsoft Dynamics CRM Server. In this scenario, you receive the following error message: This problem occurs because Microsoft Dynamics CRM 4.0 does not support an IPV6-only deployment of Windows Server 2008.

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For more information, click the following article number to view the article in the Microsoft Knowledge Base: The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

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