Disk Diagnostic: Configure custom alert text
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: Windows Server 2008 with Desktop Experience installed or Windows Vista
Path in the GPO console
Computer Configuration\Administrative Templates\System\Troubleshooting and Diagnostics\Disk Diagnostic Description
This policy setting substitutes custom alert text in the disk diagnostic message shown to users when a disk reports a S.M.A.R.T. fault. If you enable this policy setting, Windows displays custom alert text in the disk diagnostic message. The custom text may not exceed 512 characters. If you disable or do not configure this policy setting, Windows displays the default alert text in the disk diagnostic message. No reboots or service restarts are required for this policy setting to take effect: changes take effect immediately. This policy setting only takes effect if the Disk Diagnostic scenario policy setting is enabled or not configured and the Diagnostic Policy Service (DPS) is in the running state. When the service is stopped or disabled, diagnostic scenarios are not executed. The DPS can be configured with the Services snap-in to the Microsoft Management Console. Note: For Windows Server systems, this policy setting applies only if the Desktop Experience optional component is installed and the Remote Desktop Services role is not installed.
Registry
SOFTWARE\Policies\Microsoft\Windows\WDI\{29689E29-2CE9-4751-B4FC-8EFF5066E3FD} MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/ADMX_DiskDiagnostic/DfdAlertPolicy Microsoft Learn documentation Mapping data: Microsoft Learn (CC BY 4.0)
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: Disk Diagnostic: Configure custom alert text
; State: Enabled
; Supported on: Windows Server 2008 with Desktop Experience installed or Windows Vista
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WDI\{29689E29-2CE9-4751-B4FC-8EFF5066E3FD}]
"DfdAlertTextOverride"=""More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Disk Diagnostic: Configure custom alert text
# State: Enabled
# Supported on: Windows Server 2008 with Desktop Experience installed or Windows Vista
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\WDI\{29689E29-2CE9-4751-B4FC-8EFF5066E3FD}'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'DfdAlertTextOverride' -Value '' -Type StringIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/ADMX_DiskDiagnostic/DfdAlertPolicy
Data type: String
Value:
<enabled/>
<data id="DfdAlertPolicyTitle" value=""/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Disk Diagnostic: Configure custom alert text
# State: Enabled
# Supported on: Windows Server 2008 with Desktop Experience installed or Windows Vista
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\WDI\{29689E29-2CE9-4751-B4FC-8EFF5066E3FD}' -Name 'DfdAlertTextOverride' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Disk Diagnostic: Configure custom alert text
# State: Enabled
# Supported on: Windows Server 2008 with Desktop Experience installed or Windows Vista
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\WDI\{29689E29-2CE9-4751-B4FC-8EFF5066E3FD}'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'DfdAlertTextOverride' -Value '' -Type StringSCCM scripts
# Exported from gporais.com
# Policy: Disk Diagnostic: Configure custom alert text
# State: Enabled
# Supported on: Windows Server 2008 with Desktop Experience installed or Windows Vista
# 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: Disk Diagnostic: Configure custom alert text
# State: Enabled
# Supported on: Windows Server 2008 with Desktop Experience installed or Windows Vista
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\WDI\{29689E29-2CE9-4751-B4FC-8EFF5066E3FD}' -Name 'DfdAlertTextOverride' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Disk Diagnostic: Configure custom alert text
# State: Enabled
# Supported on: Windows Server 2008 with Desktop Experience installed or Windows Vista
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\WDI\{29689E29-2CE9-4751-B4FC-8EFF5066E3FD}'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'DfdAlertTextOverride' -Value '' -Type StringBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.