Specify default quota limit and warning level: registry value Limit and 3 moreComputerHKLM\Software\Policies\Microsoft\Windows NT\DiskQuota

Policy ID
DQ_Limit
Scope
Computer Configuration
Supported on
At least Windows 2000
Source
Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category
System › Disk Quotas

Registry

Limit

REG_DWORDComputer
Enabled value
Depends on the option value
Element
Value
Value type
REG_DWORD
Client extension
{3610eda5-77ef-11d2-8dc5-00c04fa31a66}
Required
true
Maximum value
1000
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\DiskQuota]

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

reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "Limit" /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\Policies\Microsoft\Windows NT\DiskQuota' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'Limit' -PropertyType DWord -Value '<enter value>' -Force | Out-Null

LimitUnits

REG_DWORDComputer
Enabled value
Depends on the option value
Element
Units
Options
ItemStored value
KB1
MB2
GB3
TB4
PB5
EB6
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\DiskQuota]

; Options (use only one)
; KB
"LimitUnits"=dword:00000001
; MB
"LimitUnits"=dword:00000002
; GB
"LimitUnits"=dword:00000003
; TB
"LimitUnits"=dword:00000004
; PB
"LimitUnits"=dword:00000005
; EB
"LimitUnits"=dword:00000006
CMD
:: Options (use only one)

:: KB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "LimitUnits" /t REG_DWORD /d 1 /f
:: MB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "LimitUnits" /t REG_DWORD /d 2 /f
:: GB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "LimitUnits" /t REG_DWORD /d 3 /f
:: TB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "LimitUnits" /t REG_DWORD /d 4 /f
:: PB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "LimitUnits" /t REG_DWORD /d 5 /f
:: EB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "LimitUnits" /t REG_DWORD /d 6 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Force | Out-Null

# Options (use only one)
# KB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'LimitUnits' -PropertyType DWord -Value 1 -Force | Out-Null
# MB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'LimitUnits' -PropertyType DWord -Value 2 -Force | Out-Null
# GB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'LimitUnits' -PropertyType DWord -Value 3 -Force | Out-Null
# TB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'LimitUnits' -PropertyType DWord -Value 4 -Force | Out-Null
# PB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'LimitUnits' -PropertyType DWord -Value 5 -Force | Out-Null
# EB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'LimitUnits' -PropertyType DWord -Value 6 -Force | Out-Null

Threshold

REG_DWORDComputer
Enabled value
Depends on the option value
Element
Value
Value type
REG_DWORD
Client extension
{3610eda5-77ef-11d2-8dc5-00c04fa31a66}
Required
true
Maximum value
1000
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\DiskQuota]

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

reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "Threshold" /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\Policies\Microsoft\Windows NT\DiskQuota' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'Threshold' -PropertyType DWord -Value '<enter value>' -Force | Out-Null

ThresholdUnits

REG_DWORDComputer
Enabled value
Depends on the option value
Element
Units
Options
ItemStored value
KB1
MB2
GB3
TB4
PB5
EB6
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\DiskQuota]

; Options (use only one)
; KB
"ThresholdUnits"=dword:00000001
; MB
"ThresholdUnits"=dword:00000002
; GB
"ThresholdUnits"=dword:00000003
; TB
"ThresholdUnits"=dword:00000004
; PB
"ThresholdUnits"=dword:00000005
; EB
"ThresholdUnits"=dword:00000006
CMD
:: Options (use only one)

:: KB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "ThresholdUnits" /t REG_DWORD /d 1 /f
:: MB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "ThresholdUnits" /t REG_DWORD /d 2 /f
:: GB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "ThresholdUnits" /t REG_DWORD /d 3 /f
:: TB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "ThresholdUnits" /t REG_DWORD /d 4 /f
:: PB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "ThresholdUnits" /t REG_DWORD /d 5 /f
:: EB
reg add "HKLM\Software\Policies\Microsoft\Windows NT\DiskQuota" /v "ThresholdUnits" /t REG_DWORD /d 6 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Force | Out-Null

# Options (use only one)
# KB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'ThresholdUnits' -PropertyType DWord -Value 1 -Force | Out-Null
# MB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'ThresholdUnits' -PropertyType DWord -Value 2 -Force | Out-Null
# GB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'ThresholdUnits' -PropertyType DWord -Value 3 -Force | Out-Null
# TB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'ThresholdUnits' -PropertyType DWord -Value 4 -Force | Out-Null
# PB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'ThresholdUnits' -PropertyType DWord -Value 5 -Force | Out-Null
# EB
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DiskQuota' -Name 'ThresholdUnits' -PropertyType DWord -Value 6 -Force | Out-Null