Hash Version support for BranchCache: registry value HashSupportVersionComputerHKLM\Software\Policies\Microsoft\Windows\LanmanServer
- Policy ID
- Pol_HashSupportVersion
- Scope
- Computer Configuration
- Supported on
- At least Windows Server 2012, Windows 8 or Windows RT
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- Network › Lanman Server
Registry
HashSupportVersion
REG_DWORDComputer- Enabled value
- Depends on the option value
- Element
- Hash version supported:
| Item | Stored value |
|---|---|
| Supports V1 hash version only | 1 |
| Supports V2 hash version only | 2 |
| Supports V1 as well as V2 versions | 3 |
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\LanmanServer] ; Options (use only one) ; Supports V1 hash version only "HashSupportVersion"=dword:00000001 ; Supports V2 hash version only "HashSupportVersion"=dword:00000002 ; Supports V1 as well as V2 versions "HashSupportVersion"=dword:00000003
CMD
:: Options (use only one) :: Supports V1 hash version only reg add "HKLM\Software\Policies\Microsoft\Windows\LanmanServer" /v "HashSupportVersion" /t REG_DWORD /d 1 /f :: Supports V2 hash version only reg add "HKLM\Software\Policies\Microsoft\Windows\LanmanServer" /v "HashSupportVersion" /t REG_DWORD /d 2 /f :: Supports V1 as well as V2 versions reg add "HKLM\Software\Policies\Microsoft\Windows\LanmanServer" /v "HashSupportVersion" /t REG_DWORD /d 3 /f
PowerShell
# Common: create the key New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\LanmanServer' -Force | Out-Null # Options (use only one) # Supports V1 hash version only New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\LanmanServer' -Name 'HashSupportVersion' -PropertyType DWord -Value 1 -Force | Out-Null # Supports V2 hash version only New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\LanmanServer' -Name 'HashSupportVersion' -PropertyType DWord -Value 2 -Force | Out-Null # Supports V1 as well as V2 versions New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\LanmanServer' -Name 'HashSupportVersion' -PropertyType DWord -Value 3 -Force | Out-Null