I am trying to lock down a spreadsheet, this would include all formula, data, and which computer is allowed to open the spreadsheet as well as put an expiration date on the file so it not able to be opened after a certain date.
Does anyone have advice on this whether or not I am able to do this within excel or do I need to purchase and aftermarket software?
Hi and welcome to the forum
1st, excel security/protection is, shall we say, somewhat lackingYou can protect the workbook with a password, to make it read-only (and hide formulas), or make it only open-able with a password. As far as only allowing certains machines to open a WB, and having expirey dates...IF that can be done, it would take VBA
1. Use code tags for VBA. [code] Your Code [/code] (or use the # button)
2. If your question is resolved, mark it SOLVED using the thread tools
3. Click on the star if you think someone helped you
Regards
Ford
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