ERROR_DS_BUILD_HIERARCHY_TABLE_FAILED - 8426 (0x20EA)
The attempt to build the hierarchy table failed.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_DS_BUILD_HIERARCHY_TABLE_FAILED indicates a failure in the process of constructing or updating the hierarchy table within the directory service. This table is crucial for maintaining the structure and organization of data, especially in Active Directory environments.
Error Details
This specific error suggests that an operation intended to build or update the hierarchy table has encountered a problem. The hierarchy table typically contains information about the relationships between objects, such as parent-child relationships within organizational units (OUs) or domains.
Usage Context
This error is relevant in scenarios where directory service operations require the hierarchy table to be up-to-date and accurate. Common operations that might trigger this error include adding, modifying, or deleting objects in the directory structure.
Developer Interpretation
When encountering ERROR_DS_BUILD_HIERARCHY_TABLE_FAILED, developers should consider several factors:
- Invalid Parameters: Ensure that all parameters passed to the operation are valid and correctly formatted.
- Object Types: Verify that the object types being manipulated are consistent with expected operations. For example, attempting to build a hierarchy table for non-directory objects might fail.
- System State: Check if the directory service is in a state where it can successfully perform the required operations. This includes ensuring that there are no ongoing transactions or other operations that could interfere with the hierarchy table construction.
Related Errors
ERROR_DS_OBJECT_NOT_FOUND: Indicates that an object being referenced does not exist, which might prevent the hierarchy table from being built correctly.ERROR_DS_DRA_SCHEMA_CONFLICT: Suggests a schema conflict during replication, which can affect the integrity of the hierarchy table.
FAQ
Q: What causes this error?
A: Common causes include invalid parameters, incorrect object types, or system state issues that prevent the hierarchy table from being built successfully.
Q: How can I troubleshoot this issue?
A: Review the operation context and ensure all parameters are correct. Verify the object types involved in the operation and check if the directory service is in a stable state.
Summary
ERROR_DS_BUILD_HIERARCHY_TABLE_FAILED is a specific error indicating a failure to build or update the hierarchy table within the directory service. Developers should focus on validating input parameters, ensuring correct object types, and confirming system stability when encountering this error.