Work week: registry value workdayUserHKCU\software\policies\microsoft\office\16.0\outlook\options\calendar

Policy ID
L_Workweek
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

Registry

workday

REG_DWORDUser
Enabled value
Depends on the option value
Element
Length of work week:
Options
ItemStored value
Monday to Friday124
Monday to Thursday120
Tuesday to Friday60
Monday to Saturday126
Wednesday to Saturday30
Thursday to Sunday142
Sunday to Friday252
All seven days254
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00

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

; Options (use only one)
; Monday to Friday
"workday"=dword:0000007c
; Monday to Thursday
"workday"=dword:00000078
; Tuesday to Friday
"workday"=dword:0000003c
; Monday to Saturday
"workday"=dword:0000007e
; Wednesday to Saturday
"workday"=dword:0000001e
; Thursday to Sunday
"workday"=dword:0000008e
; Sunday to Friday
"workday"=dword:000000fc
; All seven days
"workday"=dword:000000fe
CMD
:: Options (use only one)

:: Monday to Friday
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\calendar" /v "workday" /t REG_DWORD /d 124 /f
:: Monday to Thursday
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\calendar" /v "workday" /t REG_DWORD /d 120 /f
:: Tuesday to Friday
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\calendar" /v "workday" /t REG_DWORD /d 60 /f
:: Monday to Saturday
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\calendar" /v "workday" /t REG_DWORD /d 126 /f
:: Wednesday to Saturday
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\calendar" /v "workday" /t REG_DWORD /d 30 /f
:: Thursday to Sunday
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\calendar" /v "workday" /t REG_DWORD /d 142 /f
:: Sunday to Friday
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\calendar" /v "workday" /t REG_DWORD /d 252 /f
:: All seven days
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\calendar" /v "workday" /t REG_DWORD /d 254 /f
PowerShell
# Common: create the key
New-Item -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\calendar' -Force | Out-Null

# Options (use only one)
# Monday to Friday
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\calendar' -Name 'workday' -PropertyType DWord -Value 124 -Force | Out-Null
# Monday to Thursday
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\calendar' -Name 'workday' -PropertyType DWord -Value 120 -Force | Out-Null
# Tuesday to Friday
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\calendar' -Name 'workday' -PropertyType DWord -Value 60 -Force | Out-Null
# Monday to Saturday
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\calendar' -Name 'workday' -PropertyType DWord -Value 126 -Force | Out-Null
# Wednesday to Saturday
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\calendar' -Name 'workday' -PropertyType DWord -Value 30 -Force | Out-Null
# Thursday to Sunday
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\calendar' -Name 'workday' -PropertyType DWord -Value 142 -Force | Out-Null
# Sunday to Friday
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\calendar' -Name 'workday' -PropertyType DWord -Value 252 -Force | Out-Null
# All seven days
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\calendar' -Name 'workday' -PropertyType DWord -Value 254 -Force | Out-Null