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Editorial Team
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Asked: 2026-05-26T05:38:12+00:00

Whenever I try to use ASP.NET Configuration tool in my MVC application it shows

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Whenever I try to use ASP.NET Configuration tool in my MVC application it shows error in Security tab. The error is:

There is a problem with your selected data store. This can be caused by an invalid
server name or credentials, or by insufficient permission. It can also be caused 
by the role manager feature not being enabled. Click the button below to be 
redirected to a page where you can choose a new data store.

The following message may help in diagnosing the problem: Could not load type
'LL.MvcApplication'.

Please note that LL is my application name. ASP.NET Configuration tool works fine in non MVC web application.

What can be the issue and how can I use ASP.NET authentication in my MVC application?

I have tried both in VS 2008 and VS 2010.

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1 Answer

  1. Editorial Team

    The application name in web.config was appearing as “/” by default and when I set a proper name (“/LL”) the problem resolved.

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