What does Windows error code 8425 (ERROR_DS_BAD_HIERARCHY_FILE) mean?

 
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ERROR_DS_CANT_REPLACE_HIDDEN_REC ERROR_DS_BUILD_HIERARCHY_TABLE_FAILED

ERROR_DS_BAD_HIERARCHY_FILE

The hierarchy file is invalid.

Windows assigns decimal 8425 and hexadecimal 0x000020E9 to ERROR_DS_BAD_HIERARCHY_FILE. The decisive subject is the directory hierarchy file used by a legacy directory or address-book operation; the value alone does not reveal which object, server, file, session, or transition failed.

The native Value is 8425 (0x000020E9). Preserve this result immediately after the failing Windows call because later logging, cleanup, LDAP, RPC, or file operations can replace the last-error value.

Where the result appears

  • processing the directory hierarchy file used by a legacy directory or address-book operation.
  • executing an LDAP, RPC, deployment, replication, or directory-management operation.
  • working against a specific domain controller whose replica and schema state affect the result.
  • translating extended directory diagnostics into a Win32 error for an application or administration tool.

State boundary to prove

This result applies to the directory hierarchy file used by a legacy directory or address-book operation and does not by itself prove that the entire server, directory, disk, session, or application is unavailable. The state boundary to prove for it is whether the hierarchy file is syntactically valid and consistent with the expected directory structure. Use file path, size, and checksum, format or version header, and operation that produced the file as independent evidence. When evidence for it disagrees, preserve timestamps and investigate the transition instead of selecting the most convenient value.

Likely causes

  • the file is truncated or corrupt.
  • the file belongs to another version or environment.
  • manual editing broke its format.
  • storage or transfer changed its contents.

Diagnostic sequence

  1. capture error 8425 immediately at the API boundary and record the operation that was attempted.
  2. identify the exact owner of the directory hierarchy file used by a legacy directory or address-book operation, including object generation, server, path, session, replica, or client context.
  3. collect file path, size, and checksum before restarting a service or changing configuration.
  4. compare format or version header with the documented or observed precondition.
  5. correlate operation that produced the file with the Directory Service event log, LDAP extended diagnostics, replication metadata, dcdiag and repadmin output, and the calling application’s request trace.
  6. determine whether side effects occurred and verify recovery after changing one responsible condition.

Evidence to collect

  • file path, size, and checksum.
  • format or version header.
  • operation that produced the file.
  • related Directory Service events.

Correlate this result with the Directory Service event log, LDAP extended diagnostics, replication metadata, dcdiag and repadmin output, and the calling application’s request trace. Keep the first detailed status even when a later wrapper translates it to error 8425; the first status often distinguishes transport, authorization, storage, schema, state, and application-integrity causes that share the same final Win32 result.

Handling, retry, and recovery

The recovery objective is to regenerate the hierarchy file from authoritative directory data or restore a matching copy; do not repair unknown structure by guesswork.

Retry it only after the recorded condition changes and completion state is known. Idempotent queries may be repeated after recovery, but mutations require a state check first; backoff cannot repair malformed input, corruption, missing structure, or policy rejection.

Telemetry and support fields

  • record ds_bad_hierarchy_file_api for the producing function or management operation.
  • record ds_bad_hierarchy_file_target for the file, log, session, replica, object, or server identity.
  • record ds_bad_hierarchy_file_state_before and ds_bad_hierarchy_file_requested_transition.
  • record ds_bad_hierarchy_file_first_status for the earliest lower-level diagnostic.

For support escalation involving it, retain decimal 8425, hexadecimal 0x000020E9, the API, UTC time, target identity, and first subsystem-specific status. Include the smallest reproducible request and evidence that distinguishes this condition from nearby codes. In the context of it, many ds codes are internal or management-facing and are not tied to one public function. the producing ldap, rpc, deployment, or management api must therefore be recorded with the code.

Difference from nearby results

ERROR_DS_BUILD_HIERARCHY_TABLE_FAILED occurs while constructing the in-memory table, whereas this code identifies an invalid input file

Practical validation scenario

A migration imports a hierarchy file copied in text mode and line endings or bytes are altered. Regenerating it in the supported binary path resolves parsing. The negative test should preserve the responsible condition and reproduce it; the recovery test should change only the identified cause, repeat the same operation, and verify both success and the absence of an unintended partial side effect.

Developer and administrator guidance

Administrators handling it should preserve Directory Service events, replication metadata, and the contacted domain controller before changing objects or forcing role transitions. Developers should retain LDAP extended diagnostics and object identities across wrappers so the Win32 code does not erase the actionable directory result. Code that exposes it through RPC, JSON, REST, PowerShell, or another protocol should preserve the Win32 domain, decimal 8425, hexadecimal 0x000020E9, and original component diagnostic.

References

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