ERROR_DS_NO_FPO_IN_UNIVERSAL_GROUPS - 8549 (0x2165)
Foreign security principals cannot be members of universal groups.
Updated: Feb 21, 2026
Technical Meaning
This error code indicates that a foreign security principal, such as a user or group from another domain, cannot be added to an Active Directory universal group. Universal groups in Active Directory are used for administrative purposes and can span multiple domains.
Error Details
The term 'foreign security principal' refers to entities that belong to different domains within the same forest. These principals have unique identifiers (SIDs) that do not match those of local or trusted domain members. The error suggests a restriction in Active Directory's group management policies, preventing foreign principals from being added to universal groups.
Usage Context
This error typically occurs during operations involving user or group management within the Active Directory environment. It is relevant for administrators managing cross-domain relationships and ensuring compliance with organizational security policies.
Developer Interpretation
Developers should interpret this error as a limitation imposed by the Active Directory schema and forest trust relationships. When encountering this error, it indicates that the operation attempted to add a foreign principal to a universal group, which is not allowed due to the design of the directory service.
Related Errors
- ERROR_DS_GROUP_CONVERSION_ERROR (8547)
- ERROR_DS_NO_NEST_GLOBALGROUP_IN_UNIVERSAL (8539)
FAQ
Q: What does this error mean?
A: This error indicates that a foreign security principal cannot be added to an Active Directory universal group.
Q: Can I bypass this restriction?
A: No, the restriction is enforced by the Active Directory schema and forest trust policies. Bypassing it would require modifying these policies or using alternative methods for managing cross-domain relationships.
Summary
The ERROR_DS_NO_FPO_IN_UNIVERSAL_GROUPS error signifies a limitation in Active Directory's group management capabilities when dealing with foreign security principals. Administrators should be aware of this restriction to ensure proper configuration and operation within the directory service environment.