I am assuming that you are not using Exchange with your Outlook, so here are the instructions for restricting any file type from an e-mail message. PLEASE if you do this be very careful as errors in making edits to the registry can disable your computer and require a reinstall of windows. If you do this make good backups of all files, operating systems, and your registry before you begin.
If you are using EXCHANGE, search the MS Knowledge Base at
www.support.microsoft.com
QD
You can modify the attachment security behavior in Outlook if you are using Outlook in one of the following scenarios: •You are not using Outlook in an Exchange environment.•In an Exchange environment, the administrator has not configured the Outlook Security settings to disallow changes to the attachment security behavior.In these scenarios, follow these steps to modify the attachment security behavior in Outlook by making a modification to the registry.
How to Customize Attachment Security Behavior
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
Important Before you can customize the attachment security behavior in Outlook 2000 SR1 and Microsoft Outlook 2000 SR1a, you must first apply either Microsoft Office 2000 Service Pack 2 or Microsoft Office 2000 Service Pack 3. 1.Quit Outlook if it is running.2.Click
Start, and then click
Run. 3.In the
Open box, type regedit, and then click
OK. 4.Verify that the following registry key for your version of Outlook exists. If it does, go to step 5.
Microsoft Outlook 2000:
HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Outlook\Security
Microsoft Outlook 2002:
HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Security
Microsoft Office Outlook 2003:
HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Security
If the registry key does not exist, create it. To create the registry key, locate and then click the following registry key: HKEY_CURRENT_USER\Software\Microsoft
a. Click the
Edit menu, click
New, and then click
Key. b. Type Office, and then press ENTER. c. Click the
Edit menu, click
New, and then click
Key. d. Type 11.0, and then press ENTER.
Note This is the correct name if you are using Outlook 2003. If you are using Outlook 2000 or Outlook 2002, you will have to type "9.0" or "10.0", respectively.e. Click the
Edit menu, click
New, and then click
Key. f. Type Outlook, and then press ENTER. g. Click the
Edit menu, click
New, and then click
Key. h. Type Security, and then press ENTER. 5.Click the
Edit menu, click
New, and then click
String Value. 6.Type the following name for the new value: Level1Remove
7.Press ENTER.8.Right-click the new string value name, and then click
Modify. 9.Type the file name extension of the file type that you want to open in Outlook. For example: .exe
To specify multiple file types, use the following format: .exe;.com
10.Click
OK. 11.Quit Registry Editor.12.Restart your computer.When you start Outlook, you can open the file types that you specified in the registry.
Note We recommend that you enable only the file types that you require. If you rarely receive a particular file type, we recommend that you give Outlook temporary access to the file type that is in question and then reconfigure Outlook to block the file type by undoing the changes to registry.
For more information about how you can configure Outlook to block attachment file name extensions that Outlook does not block by default, click the following article number to view the article in the Microsoft Knowledge Base:
837388 (
http://support.microsoft.com/kb/837388/) How to configure Outlook to block additional attachment file name extensions
