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Windows 7: Outlook Attachment security Warning

30 Aug 2012   #11

Windows 7 32bit

its a head sctratcher alright..

My System SpecsSystem Spec
30 Aug 2012   #12
Microsoft MVP

Windows 7 Ult. x64


You will find several security options under Trust Center, as shown below. I think you have control over the warnings/downloads from the various settings in there. have a look at all the options - they are quite extensive.

Outlook Attachment security Warning-capture.jpg


My System SpecsSystem Spec
02 Sep 2012   #13

Windows 7 32bit

nope still no joy.
My System SpecsSystem Spec

28 Sep 2014   #14


My System SpecsSystem Spec
28 Sep 2014   #15


F.Uck MICROSOFT. SPENDING WHOLE DAY on this ****ing issue still can't find a solution.
My System SpecsSystem Spec
19 Jul 2017   #16

Windows 7 Professional x64

Hi there,

I fixed this problem in Outlook 2007 according to this post:

To turn off the Attachment Security Update after you install it:
1. Click Start, click Run, type regedit, and then click OK.
2. Locate and click the following registry key:
If this registry key is not present, right-click the Office registry key, point to New on the shortcut menu, click Key, type Outlook for the name of the new registry key, and then press ENTER.
3. Click the Outlook key, and then point to New on the Edit menu.
4. Click DWORD Value, type OldAttachmentDialog, and then press ENTER.
5. Double-click OldAttachmentDialog, type 1 in the Value Data box, and then click OK.
6. Quit Registry Editor.

The "Level1Remove" registry key fix allows you to open the specified type of attachments but Attachment Security Warning will pop up each time instead.

Just use the above "OldAttachmentDialog" registry key fix alone should fix the problem.
My System SpecsSystem Spec

 Outlook Attachment security Warning

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