Domain controller is giving no information

Domain controller is giving no information

One of my domain controllers is giving no information any more, when i try something i'm getting access denied.

This occured after the upgrade from op6 to op7 or after a patch.
Were using build 7.21

I can get the CPU info but no info in the main screen.

Rediscovery or adding the client again did not work

Please advice

Regard,

Beheer_ka












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