I'm launching asp.net mvc 3 apllication on ii6. No membership or role providers are used. I have implemented authorization by creating authorization cookie manually, and handled it in global.asax. First of all a have got this error:
Access denied creating App_Data subdirectory Description: For security reasons, the identity 'IIS APPPOOL\ASP.NET v4.0' (under which this web application is running), does not have permissions to create the App_Data subdirectory within the application root directory. ASP.NET stores the Microsoft SQL Express Database file used for services such as Membership and Profile in the App_Data subdirectory of your application.
I have searching for this error, and add this to my web.config file, as a solution:
in <system.web> node:
<roleManager enabled="false">
<providers>
<clear />
</providers>
</roleManager>
and in <modules> node in <system.webServer>:
<remove name="RoleManager" />
and then got 'Default Role Provider could not be found' error.
What I did wrong?
Solved. IIS6 does not recognize <system.webServer> (it was introduced in IIS7), and I used <httpModules> in <system.web> instead:
<system.web>
...
<httpModules>
<remove name="RoleManager" />
</httpModules>
...
<system.web>
来源：https://stackoverflow.com/questions/12128533/default-role-provider-could-not-be-found-in-iis-6-and-asp-net-mvc-3