Months: registry value monthlabeldisplayUserHKCU\software\policies\microsoft\office\16.0\ms project\options\edit

Policy ID: L_PjMonths
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 Project 2016 › Project Options › Edit › View options for time units in 'Project1'

Registry

monthlabeldisplay

REG_DWORDUser

HKCU\software\policies\microsoft\office\16.0\ms project\options\edit Current key

Enabled value: Depends on the option value
Element: Months

Options
Item	Stored value
mo	0
mon	1
month	2
	3
	4

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\ms project\options\edit]

; Options (use only one)
; mo
"monthlabeldisplay"=dword:00000000
; mon
"monthlabeldisplay"=dword:00000001
; month
"monthlabeldisplay"=dword:00000002
; 
"monthlabeldisplay"=dword:00000003
; 
"monthlabeldisplay"=dword:00000004

CMD

:: Options (use only one)

:: mo
reg add "HKCU\software\policies\microsoft\office\16.0\ms project\options\edit" /v "monthlabeldisplay" /t REG_DWORD /d 0 /f
:: mon
reg add "HKCU\software\policies\microsoft\office\16.0\ms project\options\edit" /v "monthlabeldisplay" /t REG_DWORD /d 1 /f
:: month
reg add "HKCU\software\policies\microsoft\office\16.0\ms project\options\edit" /v "monthlabeldisplay" /t REG_DWORD /d 2 /f
:: 
reg add "HKCU\software\policies\microsoft\office\16.0\ms project\options\edit" /v "monthlabeldisplay" /t REG_DWORD /d 3 /f
:: 
reg add "HKCU\software\policies\microsoft\office\16.0\ms project\options\edit" /v "monthlabeldisplay" /t REG_DWORD /d 4 /f

PowerShell

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

# Options (use only one)
# mo
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\ms project\options\edit' -Name 'monthlabeldisplay' -PropertyType DWord -Value 0 -Force | Out-Null
# mon
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\ms project\options\edit' -Name 'monthlabeldisplay' -PropertyType DWord -Value 1 -Force | Out-Null
# month
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\ms project\options\edit' -Name 'monthlabeldisplay' -PropertyType DWord -Value 2 -Force | Out-Null
# 
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\ms project\options\edit' -Name 'monthlabeldisplay' -PropertyType DWord -Value 3 -Force | Out-Null
# 
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\ms project\options\edit' -Name 'monthlabeldisplay' -PropertyType DWord -Value 4 -Force | Out-Null