Disallow locally attached storage as backup target
Verified with Windows 11 25H2 — updated on July 10, 2026
Supported on: At least Windows Server 2008
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\Backup\Server Description
This policy setting allows you to manage whether backups of a machine can run to locally attached storage or not. If you enable this policy setting, machine administrator/backup operator cannot use Windows Server Backup to run backups to a locally attached storage or disk. If you disable or do not configure this policy setting, there is no restriction on locally attached storage or disk being backup target.
Registry
HKLM
Software\Policies\Microsoft\Windows\Backup\Server Value name: NoBackupToDisk
Enabled: NoBackupToDisk = 1
Disabled: NoBackupToDisk = 0
Export Builder
BETAConfigure the state, scope and options, then generate .reg, PowerShell, Intune and SCCM outputs — or add the setting to a multi-setting collection.
These exports write the registry — this is not a managed GPO. ⓘ
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Disallow locally attached storage as backup target
; State: Enabled
; Supported on: At least Windows Server 2008
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server]
"NoBackupToDisk"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Disallow locally attached storage as backup target
# State: Enabled
# Supported on: At least Windows Server 2008
$path = 'HKLM:\Software\Policies\Microsoft\Windows\Backup\Server'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'NoBackupToDisk' -Value 1 -Type DWordIntune XML
No direct Policy CSP / OMA-URI mapping for this policy. Use the Intune Remediation tab, or ingest the ADMX in Intune.Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Disallow locally attached storage as backup target
# State: Enabled
# Supported on: At least Windows Server 2008
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\Backup\Server' -Name 'NoBackupToDisk' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Disallow locally attached storage as backup target
# State: Enabled
# Supported on: At least Windows Server 2008
$path = 'HKLM:\Software\Policies\Microsoft\Windows\Backup\Server'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'NoBackupToDisk' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Disallow locally attached storage as backup target
# State: Enabled
# Supported on: At least Windows Server 2008
# SCCM Configuration Item guidance:
# Create a Configuration Item of type "Setting: Script".
# Discovery script: use the Detection script below.
# Remediation script: use the Remediation script below.
# Compliance rule: the Discovery script output equals 'Compliant'.
# === Detection script ===
# Exported from gporais.com
# Policy: Disallow locally attached storage as backup target
# State: Enabled
# Supported on: At least Windows Server 2008
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\Backup\Server' -Name 'NoBackupToDisk' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Disallow locally attached storage as backup target
# State: Enabled
# Supported on: At least Windows Server 2008
$path = 'HKLM:\Software\Policies\Microsoft\Windows\Backup\Server'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'NoBackupToDisk' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.