Suppress Office Signing Providers: registry value suppressofficedefaultproviderUserHKCU\software\policies\microsoft\office\16.0\common\signatures

Policy ID: L_SupressOfficesigningProviders
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 Office 2016 › Signing

Registry

suppressofficedefaultprovider

REG_DWORDUser

HKCU\software\policies\microsoft\office\16.0\common\signatures Current key

Enabled value: Depends on the option value
Element: -

Options
Item	Stored value
Enable Western and East Asian	0
Suppress default Western	1
Suppress default East Asian	2
Suppress both Western and East Asian	3

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\common\signatures]

; Options (use only one)
; Enable Western and East Asian
"suppressofficedefaultprovider"=dword:00000000
; Suppress default Western
"suppressofficedefaultprovider"=dword:00000001
; Suppress default East Asian
"suppressofficedefaultprovider"=dword:00000002
; Suppress both Western and East Asian
"suppressofficedefaultprovider"=dword:00000003

CMD

:: Options (use only one)

:: Enable Western and East Asian
reg add "HKCU\software\policies\microsoft\office\16.0\common\signatures" /v "suppressofficedefaultprovider" /t REG_DWORD /d 0 /f
:: Suppress default Western
reg add "HKCU\software\policies\microsoft\office\16.0\common\signatures" /v "suppressofficedefaultprovider" /t REG_DWORD /d 1 /f
:: Suppress default East Asian
reg add "HKCU\software\policies\microsoft\office\16.0\common\signatures" /v "suppressofficedefaultprovider" /t REG_DWORD /d 2 /f
:: Suppress both Western and East Asian
reg add "HKCU\software\policies\microsoft\office\16.0\common\signatures" /v "suppressofficedefaultprovider" /t REG_DWORD /d 3 /f

PowerShell

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

# Options (use only one)
# Enable Western and East Asian
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\common\signatures' -Name 'suppressofficedefaultprovider' -PropertyType DWord -Value 0 -Force | Out-Null
# Suppress default Western
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\common\signatures' -Name 'suppressofficedefaultprovider' -PropertyType DWord -Value 1 -Force | Out-Null
# Suppress default East Asian
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\common\signatures' -Name 'suppressofficedefaultprovider' -PropertyType DWord -Value 2 -Force | Out-Null
# Suppress both Western and East Asian
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\common\signatures' -Name 'suppressofficedefaultprovider' -PropertyType DWord -Value 3 -Force | Out-Null