BUG: Error message when you try to use Visual Studio 2005 to connect to a remote instance of SQL Server after you uninstall SQL Server Management Studio Express (SSMSE): "Class not Registered"

When you uninstall any one of the following products, registry keys that Microsoft Visual Studio 2005 requires may be removed:

• SQL Server Management Studio Express (SSMSE) Community Technical Preview
• Microsoft SQL Server 2005 Express Edition with Advanced Services Community Technical Preview if you selected SSMSE as part of the installation
• Microsoft SQL Server 2005 Express Edition Toolkit Community Technical Preview if you selected SSMSE as part of the installation

You may receive the following error message when you try to use Visual Studio 2005 to connect to a remote instance of Microsoft SQL Server and then create a database diagram:Additionally, Visual Studio 2005 may stop responding.

This issue occurs because SSMSE removes some registry keys that Visual Studio requires during the uninstallation process.

To resolve this issue, you must repair the registry. To do this, 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 your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

1. Download the KB917635.exe package from the Microsoft Download Center. To do this, visit the following Microsoft Web site:
   http://download.microsoft.com/download/8/1/4/814164A0-7FAB-4F49-9763-C35CB37D8DD0/KB917635.exe (http://download.microsoft.com/download/8/1/4/814164a0-7fab-4f49-9763-c35cb37d8dd0/kb917635.exe)
2. Expand the files when you are prompted by the installer. Click Run if you want to install the new registry file now. Or click Save to install the registry file later.
   
   By default, the files are expanded to the following folder:
   C:\KB917635
3. Open the C:\KB917635 folder, and then double-click the SSMSE.reg file to update the registry.

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