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How can I protect an Excel file (and associated code) from unauthorized copying and/or create time limited functionality?

April 26, 2017associated code create Excel file limited protect time unauthorized

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How can I protect an Excel file (and associated code) from unauthorized copying and/or create time limited functionality?

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There is no foolproof method for this, and most solutions limit themselves to require macros enabled on opening. This said, creating your own system is a fun challenge allowing lots of “evil creativity”.