Restrict level of calendar details users can publish: registry value publishcalendardetailspolicyUserHKCU\software\policies\microsoft\office\16.0\outlook\options\pubcal

Policy ID: L_Restrictlevelofcalendardetails
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 › Outlook Options › Preferences › Calendar Options › Office.com Sharing Service

Registry

publishcalendardetailspolicy

REG_DWORDUser

HKCU\software\policies\microsoft\office\16.0\outlook\options\pubcal Current key

Enabled value: Depends on the option value
Element: -

Options
Item	Stored value
All options are available	0
Disables 'Full details'	8192
Disables 'Full details' and 'Limited details'	16384

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\options\pubcal]

; Options (use only one)
; All options are available
"publishcalendardetailspolicy"=dword:00000000
; Disables 'Full details'
"publishcalendardetailspolicy"=dword:00002000
; Disables 'Full details' and 'Limited details'
"publishcalendardetailspolicy"=dword:00004000

CMD

:: Options (use only one)

:: All options are available
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\pubcal" /v "publishcalendardetailspolicy" /t REG_DWORD /d 0 /f
:: Disables 'Full details'
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\pubcal" /v "publishcalendardetailspolicy" /t REG_DWORD /d 8192 /f
:: Disables 'Full details' and 'Limited details'
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\pubcal" /v "publishcalendardetailspolicy" /t REG_DWORD /d 16384 /f

PowerShell

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

# Options (use only one)
# All options are available
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\pubcal' -Name 'publishcalendardetailspolicy' -PropertyType DWord -Value 0 -Force | Out-Null
# Disables 'Full details'
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\pubcal' -Name 'publishcalendardetailspolicy' -PropertyType DWord -Value 8192 -Force | Out-Null
# Disables 'Full details' and 'Limited details'
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\pubcal' -Name 'publishcalendardetailspolicy' -PropertyType DWord -Value 16384 -Force | Out-Null