Microsoft CRM 3.0 hotfixes remain in Add or Remove Programs

Consider the following scenario:

1. You installed a hotfix for Microsoft Dynamics CRM 3.0. For example, you installed update rollup 922815.
2. You upgrade to Microsoft Dynamics CRM 4.0.
3. Finally, you uninstall Microsoft Dynamics CRM 4.0.

In this scenario, Microsoft Dynamics CRM 3.0 hotfixes still appear in the Add or Remove Programs. For example, 922815 still appears in Add or Remove Programs.

Additionally, several Microsoft Dynamics CRM 3.0 hotfix files also remain in the following directory: <drive>:\Program Files\Microsoft CRM\Server\GAC directory

For example, you may see the following files:

• Microsoft.Crm.dll
• Microsoft.Crm.ManagedInterop.dll
• Microsoft.Crm.ObjectModel.dll
• Microsoft.Crm.Platform.Callout.Manager.dll
• Microsoft.Crm.Platform.Proxy.dll
• Microsoft.Crm.Platform.Sdk.dll
• Microsoft.Crm.Platform.Server.dll
• Microsoft.Crm.Scheduling.dll

Some hotfix files may remain in the following directory: <drive>:\Program Files\Microsoft CRM\Tools directory

For example, you may see the following files:

• CharacterMap.txt
• Microsoft.Crm.SE.TimeZoneSettings.exe
• Microsoft.Crm.SE.TimeZoneUpdate.AdminTool.dll
• MSCRM30ManageAccountAndContactParentRelationships.exe
• MSCRMFastReassign.exe
• MSCRMRenameAttributes.exe

This problem occurs for the following reasons:

• The files in the tools directory were not installed by using the Windows Installer (.msi) files. Therefore, the Microsoft Dynamics CRM 3.0 .msi file cannot uninstall them.
• The files in the GAC directory were updated from a hotfix. Therefore, the Microsoft Dynamics CRM 3.0 .msi file cannot uninstall them because the versions do not match.

To work around this problem, follow these steps.
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

1. Delete the following registry subkey: HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\<KBNumber>
   
   Note <KBNumber> is a placeholder for the actual Microsoft CRM hotfix Knowledge Base (KB) number that is listed in Add Or Remove Programs. If you delete the <KBNumber> registry subkey, no hotfix will be displayed in Add or Remove Programs.
2. Delete any remaining files in the following directories:
   • <drive>:\Program Files\Microsoft CRM\Tools
   • <drive>:\Program Files\Microsoft CRM\Server\GAC directory

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.