Warning for large Kerberos tickets: registry value EnableTicketSizeThreshold and 1 moreComputerHKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters

Policy ID: TicketSizeThreshold
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: System › KDC

Registry

EnableTicketSizeThreshold

REG_DWORDComputer

HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\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\KDC\Parameters]

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

CMD

:: Options (use only one)

:: Enabled
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters" /v "EnableTicketSizeThreshold" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters" /v "EnableTicketSizeThreshold" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters' -Force | Out-Null

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

TicketSizeThreshold

REG_DWORDComputer

HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters Current key

Enabled value: Depends on the option value
Element: Ticket Size Threshold
Value type: REG_DWORD
Required: true
Minimum value: 12000
Maximum value: 2147483647

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

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

; Value names and types follow the ADMX. Replace <enter value> below with your own data
"TicketSizeThreshold"=dword:<enter value>

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters" /v "TicketSizeThreshold" /t REG_DWORD /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters' -Name 'TicketSizeThreshold' -PropertyType DWord -Value '<enter value>' -Force | Out-Null