I have problem with AD pass-through (APT) in ServiceDesk Plus 7606.

here is 2 servers: SDP 7514 and SDP 7606.

everything is fine with 7514, APT works fine (only one checkbox for enjoying).

7606 gives me all (domain scan, user import etc) exept APT. 5 data fields for configuration.

ok.

Look at sd1.jpg. 

here is APT settings of SDP 7606.

'computer account' - what's this? Existing user account (login) with particular rights? there is no difference between SDP account ('servicedesk') or account with domain admin rights - APT is not woking with any account settings.

By the way, if i try to use SPD account, i receive error messages (sd2.jpg), and when i press 'save' button again, all settings saves without any errors.

so, whats' wrong?