Rob Kraft's Software Development Blog

Software Development Insights

Archive for the ‘Outlook Utility’ Category

Free program to allow blocked outlook attachments

Posted by robkraft on December 25, 2007

I wrote my first WPF program yesterday.  The simple program allows you to unblock attachments in Microsoft Outlook.  Because this program relies on Microsoft’s new WPF technology, you must install the .Net 3.5 framework on your computer to run it.

The program gives you a list of file extensions from which you can choose for Microsoft Outlook to allow.  The program reads and writes to the registry of the local computer.  The program works for Outlook verions 9,10,11, and 12 (Outlook 2000 through 2007).

The program is based on  It helps you get past this message “Outlook blocked access to the following potentially unsafe attachments”.

Please be aware that files with these extensions are blocked to prevent harm to your computer.  If you need to unblock an extension in order to receive a file you trust, I recommend you re-block that extension after you have received the file.  You will need to stop and restart Outlook after making a change.

Note that the settings on your Exchange server may still prevent you from receiving the file in Outlook.

My program can be downloaded from this page:

I am working on a version that does not require .Net 3.5 (wpf).  It will just require .Net 2.0.


Posted in Outlook Utility, Visual Studio 2008 | Tagged: , , , , | 1 Comment »