ERROR_DS_SRC_DC_MUST_BE_SP4_OR_GREATER - 8559 (0x216F)
For security reasons, the source DC must be NT4SP4 or greater.
Updated: Feb 21, 2026
Technical Meaning
This error code indicates that a security requirement has not been met. Specifically, the source domain controller must be running at least Windows NT 4 Service Pack 4 (SP4) or a later version.
Error Details
The error ERROR_DS_SRC_DC_MUST_BE_SP4_OR_GREATER is returned when an operation requires that the source domain controller meet certain security standards. These standards are enforced to ensure that only domain controllers with sufficient security features can participate in specific operations, thereby enhancing overall network security.
Usage Context
This error typically occurs during operations involving Active Directory replication or other security-sensitive tasks where the system enforces a minimum version requirement for domain controllers. The operation may fail if the source domain controller does not meet this requirement.
Developer Interpretation
Developers should interpret this error as an indication that the current environment does not satisfy the necessary security conditions to proceed with the requested operation. This could be due to the domain controller being too old or lacking required security patches and updates.
Related Errors
ERROR_DS_SRC_SID_NOT_FOUND_IN_FOREST(2340)ERROR_DS_SRC_SID_EXISTS_IN_FOREST(2341)
FAQ
Q: What does this error mean?
A: This error indicates that the source domain controller must be running at least Windows NT 4 Service Pack 4 or a later version to perform the requested operation.
Q: How can I resolve this issue?
A: Ensure that all domain controllers involved in the operation are updated to at least SP4. If the issue persists, consult with your network administrator for further assistance.
Summary
The error ERROR_DS_SRC_DC_MUST_BE_SP4_OR_GREATER is a security-related error indicating that the source domain controller must meet specific version requirements. Developers should ensure their environment meets these standards to avoid encountering this error during operations involving Active Directory replication or other security-sensitive tasks.