The security dialogs that pop up when an application tries to access certain
Outlook properties and methods are designed to inhibit the spread of viruses
via Outlook; see
http://www.slipstick.com/outlook/esecup.htm#autosec. They
cannot be simply turned on or off with a user option or registry setting.
Standalone users can use a free tool called Express ClickYes
(
http://www.express-soft.com/mailmate/clickyes.html) to click the security
dialog buttons automatically. Beware that this means if a virus tries to
send mail using Outlook or gain access to your address book, it will
succeed.
If you're the administrator in an Exchange Server environment, you can
reduce the impact of the security prompts with administrative tools. See
http://www.slipstick.com/outlook/esecup/admin.htm
If it's an application you wrote yourself, you have these options for
modifying your program to avoid the security prompts (roughly in order of
preference):
-- Use Extended MAPI (see
http://www.slipstick.com/dev/mapi.htm) and C++
or Delphi; this is the most secure method and the only one that Microsoft
recommends. However, it applies only to COM add-ins and external programs;
you cannot use Extended MAPI in Outlook forms or VBA.
-- Use Redemption (
http://www.dimastr.com/redemption/), a third-party
COM library that wraps around Extended MAPI but parallels the Outlook Object
Model, providing many methods that the Outlook model does not support
-- Use SendKeys to "click" the buttons on the security dialogs that your
application may trigger. See
http://www.slipstick.com/outlook/esecup.htm#autosec for a link to sample
code.
-- Program the free Express ClickYes
(
http://www.express-soft.com/mailmate/clickyes.html) tool to start suspended
and turn it on only when your program needs to have the buttons clicked
automatically.