R
Ron
I can not send links or .exe files in updated Outlook 2000
and Oficce XP. It will not send them. I have edited the
registry and added the extensions .exe;.aspx;htm etc in
level1add and remove string values as talekd about here:
It still does not [work- can anyone help
thanks in advance- Ron
Why do I get "Outlook blocked access to the following
potentially unsafe attachments: [...]" error messages
opening my email?
Problem
Outlook 2002 includes a new security feature that blocks
attachments considered unsafe. If you receive an e-mail
message that contains one of the blocked file types, you
may see the following warning message:
Outlook blocked access to the following potentially unsafe
attachments: [.]
Although access to the attachment has been blocked, the
attachment still exists in the message. This article
summarizes what to do if you need to access the
attachment.
Discussion
This security feature provides an additional level of
protection against malicious e-mail messages. Updates were
available for earlier versions of Microsoft Outlook, but
in Outlook 2002 this security feature is implemented by
default.
Use one of the following recommended methods to obtain
access to the attached file:
Request that the sender post or save the attachment to a
file share and send you the link to it.
Request that the sender use a file compression utility
that changes the file extension.
Request that the sender rename the file extension and send
it to you. Once you receive the renamed attachment, you
can rename the file with the original extension.
If the previously recommended methods do not meet your
needs, you may use one of the following alternate methods:
If you are in a Microsoft Exchange Server environment and
your administrator has configured the Outlook Security
settings, ask the administrator to modify the security
settings for your mailbox.
If you are not in an Exchange Server environment, modify
the registry to customize the attachment security
settings.
Microsoft Exchange Server Environment
If you run Outlook in an Exchange Server environment, your
administrator can change the default attachment security
behavior.
Attachment Behavior
Attachments are divided into three groups based on their
file extension, or type. Outlook handles each group in a
specific way.
Level 1 ("Unsafe")
The "unsafe" category represents any extension that may
have script or code associated with it. Any attachment
with an "unsafe" file extension is inaccessible if you use
a version of Outlook that has the security patch applied
to it. The following list contains attachments that are
considered unsafe:
File extension File type
..ade Microsoft Access project extension
..adp Microsoft Access project
..asx Windows Media Audio / Video
..bas Microsoft Visual Basic class module
..bat Batch file
..chm Compiled HTML Help file
..cmd Microsoft Windows NT Command script
..com Microsoft MS-DOS program
..cpl Control Panel extension
..crt Security certificate
..exe Program
..hlp Help file
..hta HTML program
..inf Setup Information
..ins Internet Naming Service
..isp Internet Communication settings
..js JScript file
..jse Jscript Encoded Script file
..lnk Shortcut
..mdb Microsoft Access program
..mde Microsoft Access MDE database
..msc Microsoft Common Console document
..msi Microsoft Windows Installer package
..msp Microsoft Windows Installer patch
..mst Microsoft Windows Installer transform;
Microsoft Visual Test source file
..pcd Photo CD image; Microsoft Visual compiled
script
..pif Shortcut to MS-DOS program
..prf Microsoft Outlook profile settings
..reg Registration entries
..scf Windows Explorer command
..scr Screen saver
..sct Windows Script Component
..shb Shell Scrap object
..shs Shell Scrap object
..url Internet shortcut
..vb VBScript file
..vbe VBScript Encoded script file
..vbs VBScript file
..wsc Windows Script Component
..wsf Windows Script file
..wsh Windows Script Host Settings file
The following list describes how Outlook functions when
you receive an "unsafe" file attachment:
Any "unsafe" attachment is not accessible. You cannot
save, delete, open, print, or otherwise
manipulate "unsafe" files. The top of the e-mail message
indicates that Outlook has blocked access to the "unsafe"
attachment; the attachment is not accessible from Outlook,
however, the attachment is not actually removed from the e-
mail message.
If you forward an e-mail message with an "unsafe"
attachment, the attachment is not included in the
forwarded e-mail message.
If you send an e-mail message that contains an "unsafe"
attachment, you receive a warning message that says other
Outlook recipients may not be able to access the
attachment that you are trying to send. You can either
disregard the warning message and send the e-mail message,
or you can choose to not send the e-mail message.
If you save or close an e-mail message that contains
an "unsafe" attachment, you receive a warning message that
says you will not be able to access the attachment from
Outlook. You can override the warning message and save the
e-mail message.
You cannot open objects that are inserted into Microsoft
Outlook Rich Text messages by using the Insert Object
command. You do see a visual representation of the object,
but you cannot open or activate the object in the e-mail
message.
You cannot open "unsafe" files that have been directly
stored in an Outlook or Exchange Server folder. Although
these files are not attached to an Outlook item, they are
still considered "unsafe." The following error message
occurs in this situation:
Can't open the item. Outlook blocked access to this
potentially unsafe item.
Level 2
Level 2 files are not "unsafe" but they do require more
security than other attachments. When you receive a Level
2 attachment, you are prompted to save the attachment to a
disk; you cannot open the attachment from within the e-
mail message. By default, file extensions are not
associated with this group, however, you can add file
extensions to the Level 2 list.
NOTE: The list of files that are included in the Level 2
category can only be changed if you are using Outlook in a
Microsoft Exchange Server environment and your mail is
being delivered to an Exchange Server mailbox. These
changes must be made by an administrator.
Other Attachments
When you try to open an attachment other than those in
the "unsafe" or Level 2 lists, you are prompted to either
open the file directly or to save it to a disk. You can
turn off future prompts for that extension if you click to
clear the Always ask before opening this type of file
check box.
NOTE: If a program associates itself with a new file
extension, that file extension is treated as an "other"
attachment until you add the file extension to
the "unsafe" list. For example, if you install a program
on your computer that uses files with an .xyz file
extension, whenever you open an attachment that has
an .xyz file extension, the new program opens and runs the
attachment. By default, the .xyz file extension is not on
the "unsafe" or Level 2 list, so it is treated as
an "other" file extension. If you want attachments with
the .xyz file extension to be treated as "unsafe," you
must add the .xyz file extension to the list of "unsafe"
file extensions.
Solution
You can modify the attachment security behavior in Outlook
2002 if you are using Outlook in one of the following
scenarios:
Outlook is run outside of an Exchange Server environment.
In an Exchange Server environment, the administrator has
not configured the Outlook Security settings to disallow
changes to the attachment security behavior.
In these scenarios, modify the attachment security
behavior by making a modification to the registry. Perform
the following steps to modify the registry:
NOTICE: The following procedure contains information about
editing the Windows registry. Dell does not guarantee
success or support these actions. Any use of the
information provided herein, is performed at your own
risk. You should make a backup copy of the registry files
prior to executing any of the following steps. Incorrect
use of the registry editor and editing the registry files
can cause serious problems that may require a complete
reinstall of your operating system. Dell assumes no
responsibility, expressed or implied, regarding the
consequences of any action taken as a result of the
information provided herein.
Exit Outlook 2002, if running.
Click the Windows Start button, then click Run, in the
Open box, type regedit, and then click OK.
In the left pane, click on the plus next to the following
registry keys:
HKEY_CURRENT_USER
Software
Microsoft
Office
10.0
Outlook
Security
Click Edit, click New, and then click String Value.
Type the following name for the new value:
Level1Remove
Press the <Enter> key.
Right-click the new string value name, and then left-click
Modify.
Type the extension of the file type that you would like to
access with Outlook 2002 as follows:
..exe
To specify multiple file types, separate them with a
semicolon, using the following format:
..exe;.com
When finished, click OK.
Exit the Registry Editor program.
When you start Outlook 2002, the file types specified in
the Windows Registry are accessible.
NOTE: It is recommended that only the necessary file types
be enabled for access. If a particular file type is
received rarely, it is recommended that Outlook 2002 be
given temporary access to the file type in question and
then reconfigured to the blocked state by undoing the
changes made to the Windows Registry.
The information contained in the above document consists
of excerpts from Microsoft Knowledge Base. Any content
editing was done for space considerations. Where possible,
the document was left in its entirety. The technical
information and troubleshooting described herein are for
informational purposes only. For additional information or
the complete document, please go to:
http://support.microsoft.com/directory/
Article ID: Q290497 Title " OL2002: Cannot Access
Attachments"
and Oficce XP. It will not send them. I have edited the
registry and added the extensions .exe;.aspx;htm etc in
level1add and remove string values as talekd about here:
It still does not [work- can anyone help
thanks in advance- Ron
Why do I get "Outlook blocked access to the following
potentially unsafe attachments: [...]" error messages
opening my email?
Problem
Outlook 2002 includes a new security feature that blocks
attachments considered unsafe. If you receive an e-mail
message that contains one of the blocked file types, you
may see the following warning message:
Outlook blocked access to the following potentially unsafe
attachments: [.]
Although access to the attachment has been blocked, the
attachment still exists in the message. This article
summarizes what to do if you need to access the
attachment.
Discussion
This security feature provides an additional level of
protection against malicious e-mail messages. Updates were
available for earlier versions of Microsoft Outlook, but
in Outlook 2002 this security feature is implemented by
default.
Use one of the following recommended methods to obtain
access to the attached file:
Request that the sender post or save the attachment to a
file share and send you the link to it.
Request that the sender use a file compression utility
that changes the file extension.
Request that the sender rename the file extension and send
it to you. Once you receive the renamed attachment, you
can rename the file with the original extension.
If the previously recommended methods do not meet your
needs, you may use one of the following alternate methods:
If you are in a Microsoft Exchange Server environment and
your administrator has configured the Outlook Security
settings, ask the administrator to modify the security
settings for your mailbox.
If you are not in an Exchange Server environment, modify
the registry to customize the attachment security
settings.
Microsoft Exchange Server Environment
If you run Outlook in an Exchange Server environment, your
administrator can change the default attachment security
behavior.
Attachment Behavior
Attachments are divided into three groups based on their
file extension, or type. Outlook handles each group in a
specific way.
Level 1 ("Unsafe")
The "unsafe" category represents any extension that may
have script or code associated with it. Any attachment
with an "unsafe" file extension is inaccessible if you use
a version of Outlook that has the security patch applied
to it. The following list contains attachments that are
considered unsafe:
File extension File type
..ade Microsoft Access project extension
..adp Microsoft Access project
..asx Windows Media Audio / Video
..bas Microsoft Visual Basic class module
..bat Batch file
..chm Compiled HTML Help file
..cmd Microsoft Windows NT Command script
..com Microsoft MS-DOS program
..cpl Control Panel extension
..crt Security certificate
..exe Program
..hlp Help file
..hta HTML program
..inf Setup Information
..ins Internet Naming Service
..isp Internet Communication settings
..js JScript file
..jse Jscript Encoded Script file
..lnk Shortcut
..mdb Microsoft Access program
..mde Microsoft Access MDE database
..msc Microsoft Common Console document
..msi Microsoft Windows Installer package
..msp Microsoft Windows Installer patch
..mst Microsoft Windows Installer transform;
Microsoft Visual Test source file
..pcd Photo CD image; Microsoft Visual compiled
script
..pif Shortcut to MS-DOS program
..prf Microsoft Outlook profile settings
..reg Registration entries
..scf Windows Explorer command
..scr Screen saver
..sct Windows Script Component
..shb Shell Scrap object
..shs Shell Scrap object
..url Internet shortcut
..vb VBScript file
..vbe VBScript Encoded script file
..vbs VBScript file
..wsc Windows Script Component
..wsf Windows Script file
..wsh Windows Script Host Settings file
The following list describes how Outlook functions when
you receive an "unsafe" file attachment:
Any "unsafe" attachment is not accessible. You cannot
save, delete, open, print, or otherwise
manipulate "unsafe" files. The top of the e-mail message
indicates that Outlook has blocked access to the "unsafe"
attachment; the attachment is not accessible from Outlook,
however, the attachment is not actually removed from the e-
mail message.
If you forward an e-mail message with an "unsafe"
attachment, the attachment is not included in the
forwarded e-mail message.
If you send an e-mail message that contains an "unsafe"
attachment, you receive a warning message that says other
Outlook recipients may not be able to access the
attachment that you are trying to send. You can either
disregard the warning message and send the e-mail message,
or you can choose to not send the e-mail message.
If you save or close an e-mail message that contains
an "unsafe" attachment, you receive a warning message that
says you will not be able to access the attachment from
Outlook. You can override the warning message and save the
e-mail message.
You cannot open objects that are inserted into Microsoft
Outlook Rich Text messages by using the Insert Object
command. You do see a visual representation of the object,
but you cannot open or activate the object in the e-mail
message.
You cannot open "unsafe" files that have been directly
stored in an Outlook or Exchange Server folder. Although
these files are not attached to an Outlook item, they are
still considered "unsafe." The following error message
occurs in this situation:
Can't open the item. Outlook blocked access to this
potentially unsafe item.
Level 2
Level 2 files are not "unsafe" but they do require more
security than other attachments. When you receive a Level
2 attachment, you are prompted to save the attachment to a
disk; you cannot open the attachment from within the e-
mail message. By default, file extensions are not
associated with this group, however, you can add file
extensions to the Level 2 list.
NOTE: The list of files that are included in the Level 2
category can only be changed if you are using Outlook in a
Microsoft Exchange Server environment and your mail is
being delivered to an Exchange Server mailbox. These
changes must be made by an administrator.
Other Attachments
When you try to open an attachment other than those in
the "unsafe" or Level 2 lists, you are prompted to either
open the file directly or to save it to a disk. You can
turn off future prompts for that extension if you click to
clear the Always ask before opening this type of file
check box.
NOTE: If a program associates itself with a new file
extension, that file extension is treated as an "other"
attachment until you add the file extension to
the "unsafe" list. For example, if you install a program
on your computer that uses files with an .xyz file
extension, whenever you open an attachment that has
an .xyz file extension, the new program opens and runs the
attachment. By default, the .xyz file extension is not on
the "unsafe" or Level 2 list, so it is treated as
an "other" file extension. If you want attachments with
the .xyz file extension to be treated as "unsafe," you
must add the .xyz file extension to the list of "unsafe"
file extensions.
Solution
You can modify the attachment security behavior in Outlook
2002 if you are using Outlook in one of the following
scenarios:
Outlook is run outside of an Exchange Server environment.
In an Exchange Server environment, the administrator has
not configured the Outlook Security settings to disallow
changes to the attachment security behavior.
In these scenarios, modify the attachment security
behavior by making a modification to the registry. Perform
the following steps to modify the registry:
NOTICE: The following procedure contains information about
editing the Windows registry. Dell does not guarantee
success or support these actions. Any use of the
information provided herein, is performed at your own
risk. You should make a backup copy of the registry files
prior to executing any of the following steps. Incorrect
use of the registry editor and editing the registry files
can cause serious problems that may require a complete
reinstall of your operating system. Dell assumes no
responsibility, expressed or implied, regarding the
consequences of any action taken as a result of the
information provided herein.
Exit Outlook 2002, if running.
Click the Windows Start button, then click Run, in the
Open box, type regedit, and then click OK.
In the left pane, click on the plus next to the following
registry keys:
HKEY_CURRENT_USER
Software
Microsoft
Office
10.0
Outlook
Security
Click Edit, click New, and then click String Value.
Type the following name for the new value:
Level1Remove
Press the <Enter> key.
Right-click the new string value name, and then left-click
Modify.
Type the extension of the file type that you would like to
access with Outlook 2002 as follows:
..exe
To specify multiple file types, separate them with a
semicolon, using the following format:
..exe;.com
When finished, click OK.
Exit the Registry Editor program.
When you start Outlook 2002, the file types specified in
the Windows Registry are accessible.
NOTE: It is recommended that only the necessary file types
be enabled for access. If a particular file type is
received rarely, it is recommended that Outlook 2002 be
given temporary access to the file type in question and
then reconfigured to the blocked state by undoing the
changes made to the Windows Registry.
The information contained in the above document consists
of excerpts from Microsoft Knowledge Base. Any content
editing was done for space considerations. Where possible,
the document was left in its entirety. The technical
information and troubleshooting described herein are for
informational purposes only. For additional information or
the complete document, please go to:
http://support.microsoft.com/directory/
Article ID: Q290497 Title " OL2002: Cannot Access
Attachments"