CS 407 join domain fail : error 552

[Thund]

Hi,

I try to put my synology cubestation CS 407 on my domain and I get this error code : 552.

I searched on the web to this error code but I can't found anything...

I have modify my default domain policy and enable this option : Allow cryptography algorithms compatible with Windows NT 4.0.
I also try to disable the DC-DNS Firewall.

And nothing work...

Do you have any idea please?

Thanks

[Thund]

I have upgrade the firmware version and now, I have a new error code : 557