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Newer Outlook 2016 versions may not present the EAS option during account setup. A registry edit is necessary to disable the Simplified Account Creation and enable the EAS account type option.
https://wiki.zextras.com/wiki/ZxMobile_Outlook_Configuration
https://wiki.zimbra.com/wiki/Unable_to_create_Zimbra_profile_with_Outlook_2016
Exit Outlook before starting the Registry Editor!
1) Using ''regedit.exe'', open this registry subkey:
HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Office\16.0\Outlook\setup
2) Create a new ''DWORD (32-bit) Value'' named ''DisableOffice365SimplifiedAccountCreation'' 3) Set the value to ''1''
Outlook Safe Mode disables all plugins, which are the most common causes of problems.
In Outlook 2010 on Windows 7, you just hold down the control key when clicking the Outlook icon to start Outlook in Safe Mode.
In older (any) versions of Windows, you can run this command in the Run dialog box:
outlook.exe /safe
To determine which Outlook plugin is causing a problem:
Disable all plugins:
Enable plugins one at a time while testing for problems: