ERROR_DS_NOT_CLOSEST - 8588 (0x218C)
The Global catalog server is not in the closest site.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_DS_NOT_CLOSEST error code indicates that the Global catalog server being used is not located in the closest site to the client making the request. This can affect performance and efficiency, as requests may be routed through a less optimal server.
Error Details
This error typically occurs within the context of Active Directory operations, specifically when a client attempts to access or query data from a Global catalog server that is not in its closest site. The term 'closest site' refers to the site that has the most direct network connection to the client's location.
Usage Context
This error can be encountered during various AD-related operations such as user authentication, group membership queries, or any operation that requires data from a Global catalog server. It is important for developers and administrators to understand this context when troubleshooting issues related to Active Directory performance.
Developer Interpretation
When encountering ERROR_DS_NOT_CLOSEST, it suggests that the network topology or site configuration might need adjustment to ensure optimal performance. Developers should consider the location of their clients relative to the Global catalog servers and ensure that the closest site is being utilized for operations.
Related Errors
FAQ
Q: What does ERROR_DS_NOT_CLOSEST mean?
A: It indicates that the Global catalog server being used is not in the closest site to the client.
Q: How can I resolve this issue?
A: Ensure that your network topology and site configuration are optimized for performance, and consider reconfiguring sites if necessary.
Summary
ERROR_DS_NOT_CLOSEST is a specific error code indicating suboptimal server selection in Active Directory operations. Understanding its context and implications can help in optimizing network configurations and improving overall system performance.