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STATUS_FVE_FS_MOUNTED
Meaning and context of STATUS_FVE_FS_MOUNTED
The operation has an exclusivity or offline precondition that is not met while the file system is mounted. This does not mean the volume is locked by BitLocker; it describes the state required for the specific management or preparation step.
Identify the exact operation before trying to dismount anything. Stop or reschedule only the workload that prevents the required state, and confirm that backup, paging, system, or application dependencies do not rely on the target. For an operating-system volume, use the supported maintenance or recovery workflow rather than forcing a normal online dismount.
After the state transition, re-query the BitLocker and volume status before retrying. A generic access-control change or a new recovery password does not address a mounted-file-system precondition.
for it, BitLocker operations guide | manage-bde reference | Microsoft NTSTATUS reference
Native status interpretation
STATUS_FVE_FS_MOUNTED is 0xC0210007, an NTSTATUS error value. AllStat describes it as “This operation cannot be performed while a file system is mounted on the volume.”. The first useful question is which native API, IRP, protocol operation, or subsystem in the kernel, native API, or subsystem that returned the status produced that status.
Debugging sequence
- Preserve this result before RtlNtStatusToDosError, HRESULT conversion, exception translation, or provider-specific remapping removes information.
- Compare the exact fve / fs / mounted operation on a working system and record differences in object lifetime, access token, device state, negotiated protocol, and policy.
- For kernel I/O, keep the device stack, IRP major/minor function, request parameters, completion routine, and the first component that completed the request with this result.
Recovery considerations
A retry is appropriate only after the owner of this result has changed the state described by “This operation cannot be performed while a file system is mounted on the volume.”, or when its contract explicitly marks the status as transient. If the value reports corruption, invalid format, access policy, or a lifecycle mismatch, preserve evidence and correct that cause before repeating the request.
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