If I want to register a device the follow error occurs:

German Message:
Unerwartetes Serverergebnis. Servercode: -34 Invalid Device Authentication Information

Client OS : WIndowsXP 32 Bit SP3
Primary Server : windows Server 2008r2
ZCM-Version (Agent and Primary): 11.2.1

We try to reinstall agent!
We try to reinstall OS!
Device Serialnumber not fount in ZCM System!

We have this problem only on this device until now!

What can i try to register this device?

Regards Andy