I am working with AD LDS and have successfully setup a user using the\nProxy Bind Redirection with AD, based on the MSFT step-by-step guide.\nWe are working on an application that is in SharePoint. Users will\nneed to be authenticated against AD. Basically we will have users\nsetup in AD and will be authenticated using bind proxy in AD LDS. When\nI try to authenticate / bind the user from LDP.exe the user is\nauthenticated sucessfully. But when we try it from the sharepoint\napplication the user is not authenticated. We are using Forms\nAuthentication. When i check the eventlog we see an entry "Membership\ncredential verification failed. ". Is there anything specific that\nneeds to be done to successfully authenticate the users?\nuserPrincipalName for the user is set. Our requirement is to use bind\nproxy redirection where the proxy object is tied to the Active\nDirectory account through that account's security identifier (SID).