Update: if we use client application as domain administrator it works ok. Could you please tell me what rights must user have enabled?
We checked other posts but without success.
I guess that this task always requires administrator rights. So I would place in your client EXE a manifest resource that will require administrator privileges upon startup.
Unfortunately, we could not find resolution with components. Temporarly we used some application to use admin rights. This is not acceptable for customer. In future we will decide to wait for new solutions of SiComponents or go with other components.