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What does HRESULT 0xC8000408 (hrFileAccessDenied) mean?

 
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hrFileAccessDenied

Why this is more specific than the message text

hrFileAccessDenied means ESE could not open or manipulate a database-related file with the requested access.

This is the legacy Directory Service backup/restore HRESULT form of JET_errFileAccessDenied (0xC8000408).

The key comparison is: hrPermissionDenied and hrAccessDenied can be logical or API-level authorization results; this code is explicitly file access. The first useful observation is to record path, desired access/share mode, service token, ACL, owner, attributes, and locking processes. This evidence distinguishes access, operating-system I/O, integrity verification, missing files, and log corruption.

Related ESE conditions

hrDiskIOthe storage stack failed an ESE read, write, flush, or metadata operation
hrFileNotFounda syntactically valid database-related path names a file that is absent at call time
hrCannotRenameESE could not complete the temporary-to-final rename used by a database or maintenance operation

The ESE objects in play

Diagnostic layerdatabase, log, checkpoint, or temporary files and the Windows storage/security boundary
Typical API surfacedatabase open/attach, log recovery, temporary sort/maintenance, and file rename paths
Code-specific conditionESE could not open or manipulate a database-related file with the requested access
First corrective directionremove the conflicting lock or grant only the required file-system rights to the actual service identity

Database and log files should not be manually fabricated, renamed, or deleted as a first response. Integrity failures require evidence preservation before repair or replay changes the on-disk state.

Data for a reproducible case

Corrective workflow

  1. Freeze the failing request context and record 0xC8000408, the Jet API name, and the current instance/session ownership.
  2. Verify the code-specific precondition: record path, desired access/share mode, service token, ACL, owner, attributes, and locking processes.
  3. Apply the targeted fix: remove the conflicting lock or grant only the required file-system rights to the actual service identity.
  4. Before retrying the operation, reconcile file identity, integrity evidence, and the supported recovery state.

Actions that can hide or worsen the problem

Technical references


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