How to Lock Formulas in Excel
You can easily edit a formula through the formula bar or directly in the cell. While this makes it convenient to create formulas in Excel, it comes with a few disadvantages as well. By default, all the cells are locked in Excel. Only when you protect the locked cells can you truly restrict the user from making changes. This also means that if a cell is not locked and you protect it, the user would be able to make changes.
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