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How do I stop the message window "only open if you trust the source" from being displayed?

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Last Modified: 2013-12-04
This is what needs to be dobe, the pop-up message window in outlook and other various MS apps which asks "do you want to open this attachment:only open attechments when you trust the source" or very similar, a co-worker has asked if I can remove the message window when they try to open an attachment or trying to access a webpage from a hyperlink from within an E-mail imparticular. Anyone know if this can be done?
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Commented:
does anyone know?
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bbaoIT Consultant
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Commented:
i think you can do that, BUT you have to realise that this would raise security risks on the computer.

the basic steps are:

1. close your OUTLOOK if it is running.
2. open REGEDIT and locate the key at "HKCU\Software\Microsoft\Office\XX.0\Outlook\Security", where XX.0 is the version number of your OFFICE.
3. create a new String Value named "Level1Remove".
4. update the value to include the extensions to be unblocked, separated by ";".
5. restart OUTLOOK to test.

FYI

You may receive an "Outlook blocked access to the following potentially unsafe attachments" message in Outlook
http://support.microsoft.com/kb/829982

hope it helps,
bbao
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Top Expert 2010

Commented:
bbao,
That's for attachment blocking, i.e. don't let the attachment through at all.  I'm pretty sure it isn't for opening attachments.  Even if it is, this  would change the setting for all messages with a given attachment type.  It won't unblock for "trying to access a webpage from a hyperlink from within an E-mail imparticular" which I assume means unblocking this for one item from one sender.

Author

Commented:
A light description as to why it's impossible would have been nice in the original post, it was later clarified in a separate post.
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