What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.

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    Excel Reports Not Working: File format or file extension is not valid

    Asked by markashton on April 22, 2014 at 02:05 PM

    Created an excel report ... Get this ...


    have you lot been frigging around with them?

    Client needs this asap - please fix.

    many thanks

    Regards mark

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    JotForm Support

    Answered by Mike_T on April 22, 2014 at 04:10 PM

    We have switched default Excel output from .xls format (Microsoft Excel 97-2003) to up to date .xlsx format (Microsoft Excel 2007 and above).

    Your client should be able to open the file in Microsoft Excel 2007 and above. Alternatively, use a CSV format or convert the .xlsx file to .xls one.

    Thank you.