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How to disable the Open File Security Warning dialog box

We recently added a Windows Server 2003 R2 Enterprise Edition server to our Windows 2003 Enterprise Edition Terminal Services setup. We cannot run applications off other servers without receiving a "Do you want to run this application?" popup message. How can we disable this so the application runs without the message?

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You are referring to the Open File Security Warning dialog box. While you can uncheck the box for the popup, that only affects that file. If you download another file, you'll get the popup again, even if it is the same file as before. However, there is a way to turn it off for new downloads (all old downloads will still pop up with the warning unless the aforementioned box is unchecked). There are two methods for disabling the popup message.

Registry Option:

HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionPoliciesAttachments Set SaveZoneInformation to 1.


0 = Not Configured

1 = Enabled

2 = Disabled

You can also set this via Group Policy at the User Configuration > Administrative Templates > Windows Components > Attachment Manager node. Enable the "Do not preserve zone information in file attachments" setting.

This was first published in September 2007

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