修改IIS 7下Trusted Provider

C:\Windows\System32\inetsrv\config\administration.config

修改一：<trustedProviders allowUntrustedProviders="false"> 改成 <trustedProviders allowUntrustedProviders="true">

添加provider:

<add type="Microsoft.Office.Server.Security.LdapMembershipProvider, Microsoft.Office.Server, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" />
                <add type="Microsoft.Office.Server.Security.LdapRoleProvider, Microsoft.Office.Server, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c"/>