What does Windows error code 8585 (ERROR_DS_CANT_ACCESS_REMOTE_PART_OF_AD) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: A directory partition located on a remote server could not be accessed.

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ERROR_DS_CANT_ACCESS_REMOTE_PART_OF_AD

ERROR_DS_CANT_ACCESS_REMOTE_PART_OF_AD (8585) is an Active Directory Domain Services error. The directory service could not access the required partition on a remote server. This points to availability of a directory partition and its hosting DC, with DNS, RPC, site connectivity, or replication topology as likely areas to verify.

What to check

Confirm that at least one server is running and hosting the required partition.
Check DNS name resolution, connectivity, and RPC reachability between the relevant domain controllers.
Inspect replication status for the partition rather than treating this as a simple client-side LDAP error.

Useful command

repadmin /showrepl "<DomainController>" /all /verbose

Microsoft: Diagnose AD replication failures · Microsoft: DCDiag · Microsoft: Directory Service system error codes

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