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If I downloaded something from the Internet and need to "Unblock" a single file to avoid the annoying security popup, I can do it from the properties for that file: But how to do it on a folder containing 100 or more files? How to Unblock a File in Windows 10 Information The Open File - Security Warning prompt is a security measure that will ask for your perm How to Add Unblock File Context Menu in Windows 10 The Attachment Manager is included in Windows to help protect your PC from unsafe attachments that you might receive with an e-mail message and from unsafe files that you might save from the Internet. If