Workbook Copy-Protection for Microsoft Excel
The most common cause. The license file has reached its expiration date, and the software cannot find a renewal.
If your license is locked to a USB hardware key: license not recognized error 30 etabs 2016 best
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Office 2024 down to 2010 offer native 64-bit versions. XLS Padlock is an add-in for Excel, so it must match the same bitness as Excel.
In this article, Microsoft explains how to find the version and bitness of your Office installation
For instance, for Office 2016: start Excel. Open the File menu, and then select Account and click About Excel:
