Ik_andy segue esse passo a passo para poder te ajudar.
grato.
1. Log on to a computer joined to a domain with Domain Admins credentials
in the users domain (the domain that needs to be managed by administrators
in another domain).
2. Run the following LcsCmd.exe command:
LcsCmd.exe /domain[:<FQDN for users domain, to be managed>]
/action
omainAdd /RefDomain:<FQDN for domain of the user
administrators>
For example:
LcsCmd.exe /domain
upport.fabrikam.com /action
omainAdd
/Refdomain
ales.fabrikam.com
3. Verify that the DomainAdd procedure succeeded by checking that the
LcsCmd log file indicates “Success” and has no errors. You can also run the
following verification command:
LcsCmd.exe /domain[:<FQDN for users domain, to be managed>]
/action:CheckDomainAddState /Refdomain:<FQDN for domain of
the user administrators>