Configure time out for detections in critically failed state: registry value CriticalFailureTimeoutComputerHKLM\Software\Policies\Microsoft\Windows Defender\Reporting

Policy ID: Reporting_CriticalFailureTimeout
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: Windows Components › Microsoft Defender Antivirus › Reporting

Registry

CriticalFailureTimeout

-Computer

HKLM\Software\Policies\Microsoft\Windows Defender\Reporting Current key

CriticalFailureTimeout

REG_DWORDComputer

HKLM\Software\Policies\Microsoft\Windows Defender\Reporting Current key

Enabled value: Depends on the option value
Element: Configure time out for detections in critically failed state
Value type: REG_DWORD
Minimum value: 0
Maximum value: 4294967295

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows Defender\Reporting]

; Value names and types follow the ADMX. Replace <enter value> below with your own data
"CriticalFailureTimeout"=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 Defender\Reporting" /v "CriticalFailureTimeout" /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 Defender\Reporting' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows Defender\Reporting' -Name 'CriticalFailureTimeout' -PropertyType DWord -Value '<enter value>' -Force | Out-Null