HRESULT 0x803100D8 (FVE_E_PROTECTION_CANNOT_BE

Status / error code:

Category:

Constant name:

Source:

Facility:

Operating System:

Description:

BitLocker can't be suspended on this drive until the next restart.

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FVE_E_NOT_DE_VOLUME	FVE_E_OSV_KSR_NOT_ALLOWED

FVE_E_PROTECTION_CANNOT_BE_DISABLED

Where the operation stops

The value 0x803100D8, named FVE_E_PROTECTION_CANNOT_BE_DISABLED, is returned when the current policy or transient state prevents suspending BitLocker protection for the requested interval. For FVE_E_PROTECTION_CANNOT_BE_DISABLED, it belongs to the policy and authorization part of BitLocker rather than to generic file I/O.

For FVE_E_PROTECTION_CANNOT_BE_DISABLED, note: When policy is the boundary, retrying under SYSTEM does not necessarily help: policy can forbid the operation for every caller. When diagnosing FVE_E_PROTECTION_CANNOT_BE_DISABLED, remember: Separate authorization from allow/require/disallow settings before changing identities. For FVE_E_PROTECTION_CANNOT_BE_DISABLED, note: BitLocker evaluates the target volume together with effective Group Policy or MDM policy, Windows edition, caller authorization and the requested protector or management method. When diagnosing FVE_E_PROTECTION_CANNOT_BE_DISABLED, remember: A policy HRESULT therefore describes a rejected configuration decision, not evidence that encrypted sectors are damaged.

Question	What to verify
Which object failed?	For `FVE_E_PROTECTION_CANNOT_BE_DISABLED`, the exact volume GUID, protector GUID, certificate or API target supplied by the caller.
Which state matters?	effective suspend policy, current protection status, reboot count, pending update state and the API/command parameters.
What is the nearest false lead?	FIPS-specific suspension prohibition or a service that is merely busy; this code is the broader inability to disable protection.

Build a minimal diagnostic record

For FVE_E_PROTECTION_CANNOT_BE_DISABLED, record effective suspend policy, current protection status, reboot count, pending update state and the API/command parameters. For FVE_E_PROTECTION_CANNOT_BE_DISABLED, keep the full HRESULT and the first method that returned it because later cleanup calls can report a different state.
For FVE_E_PROTECTION_CANNOT_BE_DISABLED, capture manage-bde -status and the protector inventory for the exact volume GUID, not only the drive letter, because letters can change in WinRE, clusters and deployment environments.
Export BitLocker operational events for the FVE_E_PROTECTION_CANNOT_BE_DISABLED failure and note the boot session, caller identity and management source; that evidence separates this BitLocker condition from a generic access or storage error.

Change only the failed prerequisite

complete required maintenance or policy conditions and retry once; do not decrypt the volume as a substitute for a controlled suspension. For FVE_E_PROTECTION_CANNOT_BE_DISABLED, collect a fresh state snapshot and issue a single retry from the same management layer.

manage-bde -status
gpresult /h bitlocker-policy.html

Do not delete all key protectors, clear a TPM, reformat a partition or decrypt the volume as a generic response to FVE_E_PROTECTION_CANNOT_BE_DISABLED; those actions affect different trust layers and can destroy the easiest recovery route.

State checks specific to FVE_E_PROTECTION_CANNOT_BE_DISABLED

Checkpoint	How to interpret it for FVE_E_PROTECTION_CANNOT_BE_DISABLED
Before the call	Record the target identity and the pre-call policy and authorization state. For FVE_E_PROTECTION_CANNOT_BE_DISABLED, the decisive boundary is that the current policy or transient state prevents suspending BitLocker protection for the requested interval.
At failure	Preserve effective suspend policy, current protection status, reboot count, pending update state and the API/command parameters. This proves whether FVE_E_PROTECTION_CANNOT_BE_DISABLED came from BitLocker itself or from a wrapper translating another result.
After correction	Complete required maintenance or policy conditions and retry once; do not decrypt the volume as a substitute for a controlled suspension. The FVE_E_PROTECTION_CANNOT_BE_DISABLED request should then advance without removing an unrelated recovery route.
After reboot or remount	Recheck protection, conversion and lock state for FVE_E_PROTECTION_CANNOT_BE_DISABLED; a successful management call is incomplete if the next boot cannot unlock the volume.

Verification after the change

For FVE_E_PROTECTION_CANNOT_BE_DISABLED, success means more than the absence of a dialog. Confirm that the condition represented by FVE_E_PROTECTION_CANNOT_BE_DISABLED now matches the intended design, that the protector inventory has not lost an independent recovery route, and that the next reboot or remount can unlock the volume. If the FVE_E_PROTECTION_CANNOT_BE_DISABLED request advances to another HRESULT, record both values in order because that transition reveals the next unmet prerequisite.

Official documentation

Reference set for FVE_E_PROTECTION_CANNOT_BE_DISABLED:

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