In other words, don't use a Level1Remove and a Level2Remove hoping to get the desired extension added to the Other list just use a single OtherAdd registry entry. When creating a registry key for an extension, keep it simple and only use the level you wish to add your extension into. The way Outlook is supposed to work is that any extension not in Level1 and not in Level2 should fall to Other. The meaning of the three levels are: Level1=Fully blocked, Level2=Prompt to Save, and Other=Prompt to open or save. Microsoft Exchange Public Folder ShortcutįYI, there is a THIRD level for extension types which will allow you to avoid saving the file first (at least for Outlook 2007) before opening it: OtherAdd Pinned site shortcut from Internet Explorer Windows Script Component, Microsoft Foxpro Screen Microsoft Management Console Snap-in Control File Internet Document Set, Internet Translation Microsoft IIS Internet Service Provider Settings Microsoft IIS Internet Communications Settings Attachment Security for Microsoft Outlook is a free and easy to use software program that allows you to open attachments blocked by Microsoft Outlook e-mail security.ĭevelopers can use this to avoid the security prompts in Outlook.īelow is a list of file extensions blocked in Outlook. " If you get this message when attempting to access an Outlook email attachment you'll want to install Attachment Security for Outlook a free program for unlocking attachments blocked by Outlook. "Outlook blocked access to the following potentially unsafe attachment. Version 1.9.6Īttachment Security for Microsoft Outlook It also adds detection for those SP levels. gadget extension for Outlook 2003 SP3 and Outlook 2007 SP1. HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\SecurityĬOM add-in by Outlook MVP Ken Slovak that adds an Attachment Security Options page to the Tools, Options dialog in Outlook 2000 SP3 or higher to allow you to manage which file attachments are blocked. HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Security url would force you to save Zip file type and unblock Microsoft Access files and Internet shortcuts. For the value for Level1Remove, enter a semicolon-delimited list of file extensions.Add a new String value named Level1Remove.Browse to the appropriate key for your version of Outlook.Type Regedit and press enter to open the registry editor. Press windows key R to open the run command.Level1Add - treat *.zips like *.exes to completely block access to them. With this enabled, users will be presented with a dialog like the one shown here when they double click on an attachment. Level1Remove - slow down access to the zip by forcing users to save them to the hard drive before opening them.
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