How to Fix: error while Generating "xlsx" file using carlosag.excelxmlwriter dll

                The primary reason for this error is that the carlosag.excelxmlwriter dll does not support generating xlsx files natively.An alternative reason could be that there are compatibility issues with the version of Excel being used to open the generated file

            ✅ Best Solutions to Fix It

                Using a compatible library or adjusting the output format

                    Step 1: Use a different library that supports generating xlsx files, such as EPPlus or OpenXML.Step 2: Adjust the output format of the carlosag.excelxmlwriter dll to xls or csv, which are more widely supported formats.



                Checking file extension and formatting

                    Step 1: Verify that the file extension is correct (xlsx) and not being altered by the library.Step 2: Check that the formatting of the generated file matches the expected format for xlsx files.


            ✨ Wrapping Up
            To resolve this issue, try using a different library or adjusting the output format. If issues persist, check the file extension and formatting to ensure they match the expected format.