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Stop using so many tabs in Microsoft Excel

Fragmenting your data across many Excel tabs is a common habit that silently kills file performance, introduces hidden errors ...
GitHub

Opening an Excel file that contains an older version of a centrally deployed JS add-in embedded within the OOXML with cause Excel to display an ADD-IN ERROR within the Task Pane

JavaScript add-ins that are installed in Excel will get embedded within the "webextension1.xml" of the the Excel file OOXML when saved by a user. In the the below screen shot you can see that the ...