HPSUM 7.5.0 Credential issue: impossible to connect to OA

Hi,

Had to upgrade firmware on a C7000 Blade system with Integrity servers BL860CI2 & BL870CI2.

Launched bundle HPSUM 7.5.0 but impossible to connect to OA. Always msg: Credentials problems.  Tried several credentials / created new one but same problem: Impossible to connect to OA and do a discovery.

No problem to connect to OA with same login & password with http://IP@  with a browser.  No problem to connect and update Virtual Connect with VCSU with same credentials.

RESET OA PASSWORD but same issue with Administrator /default password of OA.

Same bundle works fine on a different C7000. 

Any idea?

Thanks Daniel