Retrieving CRLs (Certificate Revocation Lists): registry value usecrlchasingUserHKCU\software\policies\microsoft\office\16.0\outlook\security

Policy ID: L_RetrievingCRLsCertificateRevocationLists
Scope: User Configuration
Supported on: At least Windows Server 2008 R2 or Windows 7
Source: Microsoft 365 Apps / Office Administrative Templates (version 5568.1000)
Category: Microsoft Outlook 2016 › Security › Cryptography › Signature Status dialog box

Registry

usecrlchasing

REG_DWORDUser

HKCU\software\policies\microsoft\office\16.0\outlook\security Current key

Enabled value: Depends on the option value
Element: -

Options
Item	Stored value
Use system Default	0
When online always retreive the CRL	1
Never retreive the CRL	2

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\security]

; Options (use only one)
; Use system Default
"usecrlchasing"=dword:00000000
; When online always retreive the CRL
"usecrlchasing"=dword:00000001
; Never retreive the CRL
"usecrlchasing"=dword:00000002

CMD

:: Options (use only one)

:: Use system Default
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\security" /v "usecrlchasing" /t REG_DWORD /d 0 /f
:: When online always retreive the CRL
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\security" /v "usecrlchasing" /t REG_DWORD /d 1 /f
:: Never retreive the CRL
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\security" /v "usecrlchasing" /t REG_DWORD /d 2 /f

PowerShell

# Common: create the key
New-Item -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\security' -Force | Out-Null

# Options (use only one)
# Use system Default
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\security' -Name 'usecrlchasing' -PropertyType DWord -Value 0 -Force | Out-Null
# When online always retreive the CRL
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\security' -Name 'usecrlchasing' -PropertyType DWord -Value 1 -Force | Out-Null
# Never retreive the CRL
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\security' -Name 'usecrlchasing' -PropertyType DWord -Value 2 -Force | Out-Null