| Previous | Next |
| hrError | hrRestoreInProgress |
hrInvalidHandle
Where the workflow stopped
For hrInvalidHandle, the hexadecimal HRESULT is most useful when kept beside the API call and the affected artifact. The decisive boundary is the HBC context or current-file state is invalid for the requested backup/restore operation.
The stored Value is 0xC7FF0003 (facility-specific HRESULT). The HRESULT carries failure severity, so output state must be treated according to the individual API contract. The legacy this result name comes from the Windows Directory Service backup/restore message header.
The first useful distinction is that a syntactically non-null handle can still be stale or in the wrong state; hrAlreadyOpen instead reports an occupied file slot. Start by trace where the HBC was created, ended, reused, crossed threads, and whether a file is currently open on it. That separates a reproducible incident from a later generic cleanup or service error.
Similar-looking outcomes
This result specifically means that a syntactically non-null handle can still be stale or in the wrong state; hrAlreadyOpen instead reports an occupied file slot. Related values below can appear in the same workflow but require a different response:
hrRestoreInProgress | another restore context already owns the Directory Service restore workflow |
|---|---|
hrAlreadyOpen | the backup context already has a file open when another file-open operation is attempted |
hrNyi | the selected legacy Directory Service backup or restore entry point is present but that operation is not implemented |
Keep the original constant and hexadecimal value in telemetry. Replacing this result with “backup failed” or “database warning” removes the state information needed to select the next legal API call.
Objects and state involved
| Diagnostic layer | the legacy Ntdsbcli HBC context and exact API call contract |
|---|---|
| Relevant API surface | DsBackupPrepare/OpenFile/Read/Close/End and DsRestorePrepare/Register/Complete/End |
| Code-specific boundary | the HBC context or current-file state is invalid for the requested backup/restore operation |
| Narrow corrective direction | discard the stale context and repeat preparation rather than guessing its internal state |
Beginning with Windows Vista, Microsoft directs new implementations to VSS instead of these legacy functions., the HBC state advances across calls and must be released even when a later step fails.
Minimum useful trace
Preserve the first result before retries, cleanup, service restart, or file replacement changes the evidence. The diagnostic record should identify the exact API phase and the owner of every handle or artifact involved.
- Code-specific observation: trace where the HBC was created, ended, reused, crossed threads, and whether a file is currently open on it.
- Function and parameter values: record it together with this result and the timestamp of the first occurrence.
- HBC creation and owner: record it together with it and the timestamp of the first occurrence.
- Current open file: record it together with it and the timestamp of the first occurrence.
- RPC/Win32 status beneath the HRESULT: record it together with it and the timestamp of the first occurrence.
Use hashes, lengths, IDs, generation numbers, and redacted samples instead of copying directory contents or sensitive database values into routine logs. For this it investigation, a complete provenance chain is often more useful than a second automatic retry.
Steps to resolve it
- Record it,
0xC7FF0003, the API name, the current phase, and all live context or file owners. - Verify the decisive condition by trace where the HBC was created, ended, reused, crossed threads, and whether a file is currently open on it.
- Apply only the narrow correction: discard the stale context and repeat preparation rather than guessing its internal state.
- After it, recreate any context invalidated by the failure; do not carry stale HBC, cursor, file, or restore-map state into the retry.
- repeat the smallest non-destructive test that reaches the same boundary, then verify both the return value and the resulting file, cursor, backup, or database state.
Actions that can make diagnosis worse
- do not continue after an invalid context or undefined output.
- do not reuse an HBC after end, abort, or a fatal sequence error.
- do not discard the first lower-level Win32, RPC, or JET result merely because a later cleanup call returned a more familiar error.
Acceptance criteria for a fix
A useful regression test for it should force the condition “the HBC context or current-file state is invalid for the requested backup/restore operation”, call one documented API transition, and assert the exact HRESULT. The corrected the case should change only the decisive precondition and should verify cleanup as well as the primary output. For the result backup or restore path, also prove that the resulting set can be enumerated and that no file handle or context remains active after finalization.
Technical references
- AD backup error values — API ordering, file semantics, warning/error interpretation, or recovery behavior relevant to it.
- AD backup walkthrough
- DsRestorePrepare contract
Looking for a different code? Search another status or error code.