Outlook 2002 and Outlook 2000 SP3
(but not Outlook 98 or earlier Outlook 2000 versions) allow the user to use a
registry key to open up access to blocked attachments. (Always make a backup
before editing the registry.) To use this key:
1. Run Regedit, and go to this key:
HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Security (change 10.0
to 9.0 for Outlook 2000 SP3)
2. Under that key, add a new string
value named Level1Remove.
3. For the value for Level1Remove,
enter a semicolon-delimited list of file extensions. For example, entering
this:
mdb;url
would unblock Microsoft Access files and Internet shortcuts.
If you are using this registry entry, a glance at Help | About
Microsoft Outlook will show Security Mode: User Controlled above the
license information.
VERSION
MICROSOFT
After you
apply this fix, use the Level1Remove
and Level1Add
registry keys to customize the attachment security behavior.
Follow these steps to use the Level1Remove
registry key to allow Outlook 2000 to open file types that would otherwise be
blocked:
1.
Quit Outlook 2000 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 key
exists. If it does, go to step 5.
HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Outlook\Security
If the key
path does not exist, create the key path. To create the key path, locate and
then select the following registry key:
HKEY_CURRENT_USER\Software\Microsoft
1.
Click the Edit menu, click New, and then click Key.
2.
Type Office,
and then press the ENTER key.
3.
Click the Edit menu, click New, and then click Key.
4.
Type 9.0,
and then press the ENTER key.
5.
Click the Edit menu, click New, and then click Key.
6.
Type Outlook,
and then press the ENTER key.
7.
Click the Edit menu, click New, and then click Key.
8.
Type Security,
and then press the ENTER key.
5.
Click the Edit menu, click New, and then click String Value.
6. Type
the following name for the new value:Level1Remove
7.
Press the ENTER key.
8.
Right-click the new string value
name, and then click Modify.
9.
Type the extension of the file
type that you want to allow access to from Outlook 2000 as follows:.exe
To specify multiple file types, use the following format:
.exe;
.com
10. When
you are finished, click OK.
11. Exit
Registry Editor.
12. Restart
your computer.
When you
start Outlook 2000, the file types specified in the Windows Registry are
accessible.
NOTE: Microsoft
recommends that you only enable the file types that you need for access. If a
particular file type is received rarely, Microsoft recommends that you give
Outlook 2000 temporary access to the file type in question and then undo the
changes that you made to the Windows Registry to reconfigure to the blocked
state.
Follow these steps to use the Level1Add
registry key to configure Outlook 2000 to not open file types that would
otherwise be assessable:
1.
Quit Outlook 2000 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 key
exists. If it does, go to step 5.
HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Outlook\Security
If the key
path does not exist, create the key path. To create the key path, locate and
then select the following key:
HKEY_CURRENT_USER\Software\Microsoft
1.
Click the Edit menu, click New, and then click Key.
2.
Type Office,
and then press the ENTER key.
3.
Click the Edit menu, click New, and then click Key.
4.
Type 9.0,
and then press the ENTER key.
5.
Click the Edit menu, click New, and then click Key.
6.
Type Outlook,
and then press the ENTER key.
7.
Click the Edit menu, click New, and then click Key.
8.
Type Security,
and then press the ENTER key.
5.
Click the Edit menu, click New, and then click String Value.
6. Type
the following name for the new value:Level1Add
7.
Press the ENTER key .
8.
Right-click the new string value
name, and then click Modify.
9. Type
the extension of the file type that you want to block access with Outlook 2000
as follows:.zzz
To specify multiple file types, use the following format:
.zzz;.yyy
10. When
you are finished, click OK.
11. Exit
Registry Editor.
12. Restart
your computer.
When you
start Outlook 2000, the file types that you specified in the Windows Registry
are blocked.
If you run Outlook in an Exchange Server environment,
your administrator can change the default attachment security behavior. For
additional information about how to configure Outlook 2000 in an Exchange
Server environment, click the article number below to view the article in the
Microsoft Knowledge Base: