Hello,
In my web.config I have:
<membership>
<providers>
<add name="ADProvider1"
attributeMapUsername="SAMAccountName"
enableSearchMethods="true"
type="System.Web.Security.ActiveDirectoryMembershipProvider"
connectionStringName="ActiveDirectoryConnection1"
connectionUsername="Test1"
connectionPassword="pw1"/>
<add name="ADProvider2"
attributeMapUsername="SAMAccountName"
enableSearchMethods="true"
type="System.Web.Security.ActiveDirectoryMembershipProvider"
connectionStringName="ActiveDirectoryConnection2"
connectionUsername="Test2"
connectionPassword="pw1"/>
</providers>
...
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