seize a roles

Hello,

I try to seize roles from my primary DC server "contsystem1". I need seize the role because server has crasch(HW failure) so I want transfer roles to my secundary server "contsystem2"

But Im unable to transfer roles due to error:

PS C:\Windows\system32> ntdsutil
C:\Windows\system32\ntdsutil.exe: roles
fsmo maintenance: connections
server connections: connect to server contsystem1
Binding to contsystem1 ...
DsBindWithSpnExW error 0x6ba(Server RPC not available.)
ldap_search for attribute supportedCapabilities failed with 0x59(89 (Prameter error)

Thank you

Marek