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Configure hash algorithms for certificate logon: registry value PKInitHashAlgorithmConfigurationEnabled and 4 more (Kerberos\Parameters)ComputerHKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters

Policy ID
PKInitHashAlgorithmConfiguration
Scope
Computer Configuration
Supported on
At least Windows 11 Version 22H2
Source
Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category
System › Kerberos

Registry

PKInitHashAlgorithmConfigurationEnabled

REG_DWORDComputer
HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters Current key
Enabled value
1
Disabled value
0
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters]

; Options (use only one)
; Enabled
"PKInitHashAlgorithmConfigurationEnabled"=dword:00000001
; Disabled
"PKInitHashAlgorithmConfigurationEnabled"=dword:00000000
CMD
:: Options (use only one)

:: Enabled
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitHashAlgorithmConfigurationEnabled" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitHashAlgorithmConfigurationEnabled" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Force | Out-Null

# Options (use only one)
# Enabled
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitHashAlgorithmConfigurationEnabled' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitHashAlgorithmConfigurationEnabled' -PropertyType DWord -Value 0 -Force | Out-Null

PKInitSHA1

REG_DWORDComputer
HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters Current key
Enabled value
Depends on the option value
Element
SHA-1
Options
ItemStored value
Default1
Supported3
Audited2
Not Supported0
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters]

; Options (use only one)
; Default
"PKInitSHA1"=dword:00000001
; Supported
"PKInitSHA1"=dword:00000003
; Audited
"PKInitSHA1"=dword:00000002
; Not Supported
"PKInitSHA1"=dword:00000000
CMD
:: Options (use only one)

:: Default
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA1" /t REG_DWORD /d 1 /f
:: Supported
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA1" /t REG_DWORD /d 3 /f
:: Audited
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA1" /t REG_DWORD /d 2 /f
:: Not Supported
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA1" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Force | Out-Null

# Options (use only one)
# Default
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA1' -PropertyType DWord -Value 1 -Force | Out-Null
# Supported
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA1' -PropertyType DWord -Value 3 -Force | Out-Null
# Audited
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA1' -PropertyType DWord -Value 2 -Force | Out-Null
# Not Supported
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA1' -PropertyType DWord -Value 0 -Force | Out-Null

PKInitSHA256

REG_DWORDComputer
HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters Current key
Enabled value
Depends on the option value
Element
SHA-256
Options
ItemStored value
Default1
Supported3
Audited2
Not Supported0
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters]

; Options (use only one)
; Default
"PKInitSHA256"=dword:00000001
; Supported
"PKInitSHA256"=dword:00000003
; Audited
"PKInitSHA256"=dword:00000002
; Not Supported
"PKInitSHA256"=dword:00000000
CMD
:: Options (use only one)

:: Default
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA256" /t REG_DWORD /d 1 /f
:: Supported
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA256" /t REG_DWORD /d 3 /f
:: Audited
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA256" /t REG_DWORD /d 2 /f
:: Not Supported
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA256" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Force | Out-Null

# Options (use only one)
# Default
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA256' -PropertyType DWord -Value 1 -Force | Out-Null
# Supported
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA256' -PropertyType DWord -Value 3 -Force | Out-Null
# Audited
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA256' -PropertyType DWord -Value 2 -Force | Out-Null
# Not Supported
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA256' -PropertyType DWord -Value 0 -Force | Out-Null

PKInitSHA384

REG_DWORDComputer
HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters Current key
Enabled value
Depends on the option value
Element
SHA-384
Options
ItemStored value
Default1
Supported3
Audited2
Not Supported0
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters]

; Options (use only one)
; Default
"PKInitSHA384"=dword:00000001
; Supported
"PKInitSHA384"=dword:00000003
; Audited
"PKInitSHA384"=dword:00000002
; Not Supported
"PKInitSHA384"=dword:00000000
CMD
:: Options (use only one)

:: Default
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA384" /t REG_DWORD /d 1 /f
:: Supported
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA384" /t REG_DWORD /d 3 /f
:: Audited
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA384" /t REG_DWORD /d 2 /f
:: Not Supported
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA384" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Force | Out-Null

# Options (use only one)
# Default
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA384' -PropertyType DWord -Value 1 -Force | Out-Null
# Supported
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA384' -PropertyType DWord -Value 3 -Force | Out-Null
# Audited
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA384' -PropertyType DWord -Value 2 -Force | Out-Null
# Not Supported
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA384' -PropertyType DWord -Value 0 -Force | Out-Null

PKInitSHA512

REG_DWORDComputer
HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters Current key
Enabled value
Depends on the option value
Element
SHA-512
Options
ItemStored value
Default1
Supported3
Audited2
Not Supported0
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters]

; Options (use only one)
; Default
"PKInitSHA512"=dword:00000001
; Supported
"PKInitSHA512"=dword:00000003
; Audited
"PKInitSHA512"=dword:00000002
; Not Supported
"PKInitSHA512"=dword:00000000
CMD
:: Options (use only one)

:: Default
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA512" /t REG_DWORD /d 1 /f
:: Supported
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA512" /t REG_DWORD /d 3 /f
:: Audited
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA512" /t REG_DWORD /d 2 /f
:: Not Supported
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters" /v "PKInitSHA512" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Force | Out-Null

# Options (use only one)
# Default
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA512' -PropertyType DWord -Value 1 -Force | Out-Null
# Supported
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA512' -PropertyType DWord -Value 3 -Force | Out-Null
# Audited
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA512' -PropertyType DWord -Value 2 -Force | Out-Null
# Not Supported
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters' -Name 'PKInitSHA512' -PropertyType DWord -Value 0 -Force | Out-Null