How To allow Microsoft Outlook’s Programmatic Access

Microsoft has made security restricted access to outlook , This can be a pain when dealing with sending emails from a program accessing outlook for example.

I have found that the easiest way is to modify/create registry key to allow programmatic access. This method is working on terminal servers as well – require reboot though.

You should be aware that this setting open outlook to risks and exploits. therefor you should consider additional protection like antivirus or other restriction .

Outlook 2016

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\16.0\Outlook\Security
DWORD: ObjectModelGuard
Value: 2

You can also set the keys below. As always, if the keys don’t exist in the registry, you’ll need to create them.

HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\outlook\security
DWORD: PromptOOMSend
Value: 2
DWORD: AdminSecurityMode
Value: 3
DWORD: promptoomaddressinformationaccess
Value: 2
DWORD: promptoomaddressbookaccess
Value: 2

Outlook 2013

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\15.0\Outlook\Security
DWORD: ObjectModelGuard
Value: 2

You can also set the keys below. As always, if the keys don’t exist in the registry, you’ll need to create them.

HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\15.0\outlook\security
DWORD: PromptOOMSend
Value: 2
DWORD: AdminSecurityMode
Value: 3
DWORD: promptoomaddressinformationaccess
Value: 2
DWORD: promptoomaddressbookaccess
Value: 2

Outlook 2010

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\14.0\Outlook\Security
DWORD: ObjectModelGuard
Value: 2

HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\outlook\security
DWORD: PromptOOMSend
Value: 2
DWORD: AdminSecurityMode
Value: 3
DWORD: promptoomaddressinformationaccess
Value: 2
DWORD: promptoomaddressbookaccess
Value: 2

Ready made reg files (just download extract and import to registry)

Outlook 2016 Outlook 2013 Outlook 2010

MOre information can be found here :

Change Outlook’s Programmatic Access Options


Good Luck

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