Allow access to BitLocker-protected fixed data drives from earlier versions of Windows: registry value FDVDiscoveryVolumeType and 1 moreComputerHKLM\Software\Policies\Microsoft\FVE
- Policy ID
- FDVHybrid_Name
- Scope
- Computer Configuration
- Supported on
- At least Windows Server 2008 R2 or Windows 7 through Windows Server 2022 or Windows 11 Version 22H2
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- Windows Components › BitLocker Drive Encryption › Fixed Data Drives
Registry
FDVDiscoveryVolumeType
REG_SZComputerHKLM\Software\Policies\Microsoft\FVE Current key
- Enabled value
- FAT32
- Disabled value
- <none>
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\FVE] ; Options (use only one) ; Enabled "FDVDiscoveryVolumeType"="FAT32" ; Disabled "FDVDiscoveryVolumeType"="<none>"
CMD
:: Options (use only one) :: Enabled reg add "HKLM\Software\Policies\Microsoft\FVE" /v "FDVDiscoveryVolumeType" /t REG_SZ /d "FAT32" /f :: Disabled reg add "HKLM\Software\Policies\Microsoft\FVE" /v "FDVDiscoveryVolumeType" /t REG_SZ /d "<none>" /f
PowerShell
# Common: create the key New-Item -Path 'HKLM:\Software\Policies\Microsoft\FVE' -Force | Out-Null # Options (use only one) # Enabled New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\FVE' -Name 'FDVDiscoveryVolumeType' -PropertyType String -Value 'FAT32' -Force | Out-Null # Disabled New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\FVE' -Name 'FDVDiscoveryVolumeType' -PropertyType String -Value '<none>' -Force | Out-Null
FDVNoBitLockerToGoReader
REG_DWORDComputerHKLM\Software\Policies\Microsoft\FVE Current key
- Checked
- 1
- Unchecked
- 0
- Element
- Do not install BitLocker To Go Reader on FAT formatted fixed drives
- Value type
- REG_DWORD
- Required
- true
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\FVE] ; Options (use only one) ; Checked "FDVNoBitLockerToGoReader"=dword:00000001 ; Unchecked "FDVNoBitLockerToGoReader"=dword:00000000
CMD
:: Options (use only one) :: Checked reg add "HKLM\Software\Policies\Microsoft\FVE" /v "FDVNoBitLockerToGoReader" /t REG_DWORD /d 1 /f :: Unchecked reg add "HKLM\Software\Policies\Microsoft\FVE" /v "FDVNoBitLockerToGoReader" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key New-Item -Path 'HKLM:\Software\Policies\Microsoft\FVE' -Force | Out-Null # Options (use only one) # Checked New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\FVE' -Name 'FDVNoBitLockerToGoReader' -PropertyType DWord -Value 1 -Force | Out-Null # Unchecked New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\FVE' -Name 'FDVNoBitLockerToGoReader' -PropertyType DWord -Value 0 -Force | Out-Null