In 12.52 SP1 CR08, There are NOT authenticate issue for AD LDS user store, and Policy Server recognize user store AD DS, NOT AD LDS.
1: Access to protected resource
2. Enter credential in AD LDS user store
3. Display error screen and failed message in smps.log
<Please see attached file for image>
ProductName=CA SiteMinder Policy Server
This issue will be fixed in CR09 and 12.8 Policy Server version.
DE326287/ DE335297 Policy Server identifies the ADLDS user store as Active Directory.