Allow specified hosts to show Basic Authentication prompts to Office apps: registry value basichostallowlistUserHKCU\software\policies\microsoft\office\16.0\common\identity

Policy ID: L_BasicAuthPromptBehavior
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 › Security Settings

Registry

basichostallowlist

REG_EXPAND_SZUser

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

Enabled value: Depends on the option value
Element: Host names:
Value type: REG_EXPAND_SZ
Required: false
Expandable string (REG_EXPAND_SZ): true

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

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

; Value names and types follow the ADMX. Replace <enter value> below with your own data
; hex(2) and hex(7) data must be written as hexadecimal (UTF-16LE)
"basichostallowlist"=hex(2):<enter value>

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKCU\software\policies\microsoft\office\16.0\common\identity" /v "basichostallowlist" /t REG_EXPAND_SZ /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKCU:\software\policies\microsoft\office\16.0\common\identity' -Force | Out-Null
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\common\identity' -Name 'basichostallowlist' -PropertyType ExpandString -Value '<enter value>' -Force | Out-Null