What does NTSTATUS 0xC000026E (STATUS_VOLUME_DISMOUNTED) mean?

 
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STATUS_DFS_UNAVAILABLE STATUS_WX86_INTERNAL_ERROR

STATUS_VOLUME_DISMOUNTED

The volume object is no longer mounted for this operation

This status points to volume lifetime. A handle, file object, or cached path refers to a volume that has been dismounted, so the file-system stack cannot service the operation through the old mounted state.

It can appear after explicit dismount, media removal, storage stack surprise removal, or administrative volume operations. Reopening through the current volume identity is safer than reusing stale handles.

What to inspect

  • Check for FSCTL_DISMOUNT_VOLUME, volume lock, surprise removal and mount-manager events.
  • Close stale handles and reopen after the volume is mounted again.
  • Correlate with storage, PnP and filesystem logs.

References


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