Xlsx documents with a global filter defined cannot be imported. Message box "The name that you entered is not valid." is shown and internally SpreadsheetNameException is thrown. MS Excel can import such document and even preserve the filter, but do not respect it and doesn't have UI to clear it. Workaround 1 (includes processing the document with MS Excel): - Open the document in MS Excel - Choose Formulas -> Defined names -> Named Manager - Choose Filter -> Names with errors - Find all Filter defined names and delete them - Save the document