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A Hotfix is a product update package with one or more updated product files that fix a specific product problem.


Please be aware this Hotfix has not gone through full Microsoft product regression testing nor has it been tested in combination with other Hotfixes.

Please carefully review the associated Hotfix KB article to verify the fix is the one needed and there are no known compatibility or installation issues. You may also want to contact a Microsoft Support Professional at

Issue Description

KB921019 FIX:The form may not be displayed when you try to switch to Design view for a complex form in Visual Studio 2005

When you try to switch to Design view for a complex form in Microsoft Visual Studio 2005, the form may not be displayed. Additionally, you may receive the following error message:
The designer loader did not provide a root component but has not indicated why.

at System.ComponentModel.Design.DesignSurface.get_View()
at Microsoft.VisualStudio.Shell.Design.WindowPaneProviderService.CreateWindowPane(DesignSurface surface)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.DeferrableWindowPaneProviderService.CreateWindowPane(DesignSurface surface)
at Microsoft.VisualStudio.Design.VSDesignSurface.Microsoft.VisualStudio.Designer.Interfaces.IVSMDDesigner.get_View()
You may also receive an error message that resembles the following:
Duplicate component name '<ColumnName>DataGridViewTextBoxColumn'. Component names must be unique and case-insensitive.

Additional Information about the Hotfix is available at

Additional Information about the issue resolved by this Hotfix can be found in its Knowledge Base article at

Additional Hotfixes
Search the list of all other publicly available Visual Studio and .NET Framework Hotfixes at*

Last edited Jun 19 2008 at 9:21 PM  by codegalleryadmin, version 4
anotherusername wrote  Sep 3 2008 at 1:19 AM  
Where is the x86 version of this hotfix???

cosmin1595 wrote  Jul 6 2009 at 2:33 PM  
Is a 32 bit version available!?

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