Error event after you upgrade Microsoft Dynamics CRM 3.0 to Microsoft Dynamics CRM 4.0: "Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceException"

After you upgrade Microsoft Dynamics CRM 3.0 to Microsoft Dynamics CRM 4.0, the following Error event is logged in the Application log:

Event Type: Error
Event Source: MSCRMFaxRouterService
Event Category: None
Event ID: 0
Date: Date
Time: Time
User: N/A
Computer: ServerName
Description:
Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceException: Failed to initialize the fax analysis module for folder: [CRMServerUrl:'http://<CRMSERVERURL>' Folder:'C:\Program Files\Microsoft CRM\Server\bin\fax\incoming'] (Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceException: Failed to load users for fax recognition purposes for folder: [CRMServerUrl:'http://<CRMSERVERURL>'Folder:'C:\Program Files\Microsoft CRM\Server\bin\fax\incoming'] (System.Net.WebException: The request failed with HTTP status 503: Service Unavailable.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.Crm.Platform.Proxy.BizUser.WhoAmI()
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.LoadUsers(FaxSinkServiceFolder faxSinkServiceFolder, ArrayList contactInfoArrayList, Guid& setupUserId, Guid& setupUserBusinessId)). ---> System.Net.WebException: The request failed with HTTP status 503: Service Unavailable.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.Crm.Platform.Proxy.BizUser.WhoAmI()
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.LoadUsers(FaxSinkServiceFolder faxSinkServiceFolder, ArrayList contactInfoArrayList, Guid& setupUserId, Guid& setupUserBusinessId)
--- End of inner exception stack trace ---
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.LoadUsers(FaxSinkServiceFolder faxSinkServiceFolder, ArrayList contactInfoArrayList, Guid& setupUserId, Guid& setupUserBusinessId)
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.SetupFaxAnalysisModule(FaxSinkServiceFolder faxSinkServiceFolder)). ---> Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceException: Failed to load users for fax recognition purposes for folder: [CRMServerUrl:'http://CRMServerName:Port_Number' Folder:'C:\Program Files\Microsoft CRM\Server\bin\fax\incoming'] (System.Net.WebException: The request failed with HTTP status 503: Service Unavailable.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.Crm.Platform.Proxy.BizUser.WhoAmI()
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.LoadUsers(FaxSinkServiceFolder faxSinkServiceFolder, ArrayList contactInfoArrayList, Guid& setupUserId, Guid& setupUserBusinessId)). ---> System.Net.WebException: The request failed with HTTP status 503: Service Unavailable.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.Crm.Platform.Proxy.BizUser.WhoAmI()
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.LoadUsers(FaxSinkServiceFolder faxSinkServiceFolder, ArrayList contactInfoArrayList, Guid& setupUserId, Guid& setupUserBusinessId)
--- End of inner exception stack trace ---
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.LoadUsers(FaxSinkServiceFolder faxSinkServiceFolder, ArrayList contactInfoArrayList, Guid& setupUserId, Guid& setupUserBusinessId)
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.SetupFaxAnalysisModule(FaxSinkServiceFolder faxSinkServiceFolder)
--- End of inner exception stack trace ---
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.SetupFaxAnalysisModule(FaxSinkServiceFolder faxSinkServiceFolder)
at Microsoft.Crm.Tools.FaxConnectorService.FaxSinkServiceCore.ExecuteService()

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.

This problem occurs because the upgrade process does not remove the Microsoft CRM-Fax Router Service.

To resolve this problem, disable the Microsoft CRM-Fax Router Service. To do this, follow these steps:

1. Click Start, click Run, type services.msc, and then click OK.
2. In the Services dialog box, click Microsoft CRM-Fax Router Service, and then click Properties.
3. In the Startup type list, click Disabled.
4. Click Stop.

The Microsoft Dynamics CRM 3.0 Fax Connector for Microsoft Windows Small Business Server 2003 (Windows SBS) is not included in Microsoft Dynamics CRM 4.0.