After upgrading SAM we get an error logging in with Active Directory credentials.
Unknown combination of login and password or insufficient permissions.
Release : 17.2
Component : CA Software Asset Manager
Verify the LDAP extension is enabled in the php.ini file.
Go to folder C:\Program Files (x86)\CA\sam\env\php
Open file php.ini
verify the php_ldap extension is not commented out.
If there is a semicolon before the line, remove it and save the file.