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Importing a new version from external source
==== <span id="InvalidXLSXFormatException"> <span id="NotOOXMLFileException">XLSX file is in an invalid format</span></span> ====
We are unable to read your ''XLSX'' file, because the structure of the file is apparently in an invalid format. If the file was generated by a third-party software, it could be a problem in the program that generated the file. In this case, try the following:
* Save the file again using Excel. See how [[Saving as Save File Supported Format|here]];
* If your file is password protected, remove the protection;