In the previous issue of Exchange Messaging Outlook, I explained how to use group policy to disable the tentative response option. The July 3 2018 Outlook 2016 update builds in the ability to remove the Do not Send a Response option.
The required update is in Outlook 2016 Click to run and is now available in the volume licensing version when the July 3 2018 Outlook 2016 update is installed.
To hide the Do not Send a Response option, add the DWORD ForceMtgResponse to the following registry key:
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\Calendar DWORD: ForceMtgResponse Value: 1
You'll need to restart Outlook after setting this key.
Administrators can add the key using Group Policy.
HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Outlook\Options\Calendar DWORD: ForceMtgResponse Value: 1
Do it for me
In Outlook 2013, the only option is to disable the menu option, adding the CommandID to the key at
HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\x.0\Outlook\DisabledCmdBarItemsListThe CommandID for Do Not Send a Response is 19987. Instructions are at Use Group Policy to disable commands Use Group Policy to disable commands Use Group Policy to disable commands