My Outlook 2007 Is Not Opening an Attached File
Microsoft Outlook 2007 separates email attachments into two categories: safe or unsafe. Outlook refers to the attachment's file extension -- a three character suffix appended to the end of a file name -- to determine whether or not the file poses a security risk to your computer. Common examples of unsafe file extensions include EXE, BAT, DLL and REG. Although some attachments can harm your computer, if you know the file is safe and that it comes from a trusted source, downloading the attachment won't pose any risk to your PC. If Outlook 2007 prevents you from opening or viewing an attached file, you can use CodeTwo Attach Unblocker or Outlook Attachment Enabler to unblock the attachment.
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Instructions
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CodeTwo Attach Unblocker
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Quit Microsoft Outlook 2007. Download and install CodeTwo Attach Unblocker.
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Open Outlook. Click "Tools", then click "Options".
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Click the "CodeTwo Attach Unblocker" tab. Enter the attachment's file extension (e.g. ".exe" or ".dll" without quotes) into the "Unblocked attachments" field.
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Click "Add" to unblock the attachment. Return to the message containing the attached file. Double-click the attachment to open it.
Outlook Attachment Enabler
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Exit from Microsoft Outlook 2007. Download and install Outlook Attachment Enabler (OAE).
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Open OAE and click the radio button next to "Display Blocked Extensions". Scroll through the list of file extensions, and then select the extension the email attachment uses.
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Click "Mark as safe". Click "Close." Open Outlook 2007 and return to your inbox. Go to the message with the attached file.
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Double-click the attachment to open it.
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Tips & Warnings
Never open, view or unblock an attachment unless you know that the file is safe.
