FWIW, you can only have one instance of outlook running at a time. The other
'instances' are just additional windows. To avoid opening multiple windows
you need to find out how to edit the command line for the button and add
/recycle to the command - its usually in the keyboard utility in control
panel.
--
Diane Poremsky [MVP - Outlook]
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"Tester" <(E-Mail Removed)> wrote in message
news:32AFDE10-552D-4612-B536-(E-Mail Removed)...
> My keyboard has an E-mail key. But the problem is that, when I press that
> key, a new instance of Outlook is launched. Besides that, if I click on
> the
> Outlook icon from the start menu, it also launches a new instance of
> Outlook.
>
> It's a mess. I want a single instance of Outlook. I looked for an option
> like "Allow only one instance" in the options dialogue, but I couldn't
> find
> one. Is there any hidden option?
>
> PS: I guess the command line option "/recycle" is not useful, because it's
> a
> built-in E-mail key and I don't have any drivers to customise its
> behaviour.