Microsoft Outlook includes a feature that blocks attachments that are considered unsafe. If you receive an e-mail message that contains an attachment that contains one of the file types that are considered unsafe, you may receive the following message:
Outlook blocked access to the following potentially unsafe attachments: [...]
Although Outlook blocks access to the attachment, the attachment still exists in the e-mail message. Outlook Attachment Security Administrator allows to control which file types are blocked or not and provide access to blocked attachments in the message.
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