Windows Registry Editor Version 5.00

; ============================================================
; BLOCK MSA (MICROSOFT ACCOUNT)
; ============================================================
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\MicrosoftAccount]
"DisableUserAuth"=dword:00000001

; ============================================================
; DISABLE WAM / MODERN AUTH FOR OFFICE (FORCE LEGACY AUTH)
; ============================================================
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Common\Identity]
"EnableADAL"=dword:00000000
"DisableADALatopWAMOverride"=dword:00000001
"DisableAADWAM"=dword:00000001

; ============================================================
; OUTLOOK AUTODISCOVER – DISABLE OFFICE 365 / MSA ENDPOINTS
; ============================================================
[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover]
"ExcludeExplicitO365Endpoint"=dword:00000001
"ExcludeOffice365Endpoint"=dword:00000001
"ExcludeHttpsAutoDiscoverDomain"=dword:00000001
"ExcludeHttpsRootDomain"=dword:00000001
"PreferLocalXML"=dword:00000001
"ExcludeScpLookup"=dword:00000000
"ExcludeSrvRecord"=dword:00000000

; ============================================================
; DISABLE OUTLOOK SIMPLIFIED ACCOUNT CREATION
; ============================================================
[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Setup]
"DisableOffice365SimplifiedAccountCreation"=dword:00000001

; ============================================================
; FORCE OUTLOOK TO USE ONLY ON-PREMISE EXCHANGE AUTODISCOVER
; ============================================================
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Common\Internet]
"UseOnlineContent"=dword:00000000

; ============================================================
; ADDITIONAL WAM BLOCK (SYSTEM LEVEL)
; ============================================================
[HKEY_LO_]()