- Start the registry editor by pressing the Start button, Run, typing regedit and pressing OK.
- In Registry Editor, expand, in turn:
HKEY_CURRENT_USERExpand each entry by clicking on the boxed plus sign to it's left. If that's a boxed minus sign, then it's already expanded.
11.0 (Office 2003. For Office XP, expand "10.0")
- Now click on the Security entry.
- On Registry Editor's menu bar, select Edit, New, and String Value.
- Replace the default name of "New Value #1" with "Level1Remove".
- Right-click on Level1Remove and select Modify.
- Enter the list of file extensions that you want to gain access to. The list is semi-colon separated. For example if you wanted to allow access to both ".url" and ".exe" files, then you would enter ".url;.exe".
- Exit Registry Editor, and you're done. You may need to restart Outlook if it was running while you were doing this.