RPC/HTTP Connection Flags: registry value proxyserverflagsUserHKCU\software\policies\microsoft\office\16.0\outlook\rpc

Policy ID: L_RPCHTTPConnectionFlags
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 › Account Settings › Exchange

Registry

proxyserverflags

REG_DWORDUser

HKCU\software\policies\microsoft\office\16.0\outlook\rpc Current key

Enabled value: Depends on the option value
Element: Select a combination of RPC/HTTP connection flags (see Explain tab for details):

Options
Item	Stored value
No Flags	0
Flags: 1 + 2 + 3 + 4 + 5	47
Flags: 1 + 2 + 3 + 5	39
Flags: 1 + 2 + 4 + 5	43
Flags: 1 + 2 + 5	35
Flags: 1 + 4 + 5	41
Flags: 1 + 5	33

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\rpc]

; Options (use only one)
; No Flags
"proxyserverflags"=dword:00000000
; Flags: 1 + 2 + 3 + 4 + 5
"proxyserverflags"=dword:0000002f
; Flags: 1 + 2 + 3 + 5
"proxyserverflags"=dword:00000027
; Flags: 1 + 2 + 4 + 5
"proxyserverflags"=dword:0000002b
; Flags: 1 + 2 + 5
"proxyserverflags"=dword:00000023
; Flags: 1 + 4 + 5
"proxyserverflags"=dword:00000029
; Flags: 1 + 5
"proxyserverflags"=dword:00000021

CMD

:: Options (use only one)

:: No Flags
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\rpc" /v "proxyserverflags" /t REG_DWORD /d 0 /f
:: Flags: 1 + 2 + 3 + 4 + 5
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\rpc" /v "proxyserverflags" /t REG_DWORD /d 47 /f
:: Flags: 1 + 2 + 3 + 5
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\rpc" /v "proxyserverflags" /t REG_DWORD /d 39 /f
:: Flags: 1 + 2 + 4 + 5
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\rpc" /v "proxyserverflags" /t REG_DWORD /d 43 /f
:: Flags: 1 + 2 + 5
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\rpc" /v "proxyserverflags" /t REG_DWORD /d 35 /f
:: Flags: 1 + 4 + 5
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\rpc" /v "proxyserverflags" /t REG_DWORD /d 41 /f
:: Flags: 1 + 5
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\rpc" /v "proxyserverflags" /t REG_DWORD /d 33 /f

PowerShell

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

# Options (use only one)
# No Flags
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\rpc' -Name 'proxyserverflags' -PropertyType DWord -Value 0 -Force | Out-Null
# Flags: 1 + 2 + 3 + 4 + 5
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\rpc' -Name 'proxyserverflags' -PropertyType DWord -Value 47 -Force | Out-Null
# Flags: 1 + 2 + 3 + 5
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\rpc' -Name 'proxyserverflags' -PropertyType DWord -Value 39 -Force | Out-Null
# Flags: 1 + 2 + 4 + 5
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\rpc' -Name 'proxyserverflags' -PropertyType DWord -Value 43 -Force | Out-Null
# Flags: 1 + 2 + 5
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\rpc' -Name 'proxyserverflags' -PropertyType DWord -Value 35 -Force | Out-Null
# Flags: 1 + 4 + 5
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\rpc' -Name 'proxyserverflags' -PropertyType DWord -Value 41 -Force | Out-Null
# Flags: 1 + 5
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\rpc' -Name 'proxyserverflags' -PropertyType DWord -Value 33 -Force | Out-Null