These files can’t be opened. Your Internet security settings prevented one or more files from being opened.

I came across this today while trying to run an unsigned, potentially harmful executable. There are plenty of recommendations out there on the web on how to fix this, but I found the fastest solution to be as follows.

Open internet explorer and select internet options:

internet_explorer_settings

Next select the security tab then restricted sites:

internet_explorer_settings_security+restricted_sites

Now Select custom level and in the new window scroll down and enable “launching applications and unsafe files(not secure)”:

internet_explorer_settings+security_settings-restricted-sites-zone

Select ok and agree to the warning:

internet_explorer_settings+warning!

Now try to run your executable. If this still does not work try using the above steps on the internet, local intranet, and trusted sites zones:

internet_explorer_settings+main_menu

shared mailbox sent items outlook 2013

[Update]: This won't work unless you have admin rights on the computer in question (the required registry keys will not be visible), in which case speak to your IT administrator.

The resolution is as follows:

• Open the registry (careful!) by clicking Start > Run > type in 'regedit' [enter]

• Drill down to HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Preferences

• Add a DWord called 'DelegateSentItemsStyle'. Give it a value of 1. Restart Outlook.