How to fix excel cannot open the file - Microsoft Community
2024年11月4日 · "Excel cannot open the file '*******.xlsx' because the file format or file extension is not valid, Verify that the file has not been corrupted and that the file extension matches the format of the
What is the real difference between a .xls vs .xlsx file
2012年3月20日 · Can somebody point me to a credible source of information explaining what are the real differences between a .xls and .xlsx file ? I have many .xls file. I began using Office v14 recently and wonder if it is useful to change them all to …
[SOLVED] The .xlsx file type is missing from the file types list and ...
2022年2月17日 · Due to the subject the xlsx files are saved (and treated) as Internet Explorer files (!!) and the ways to open them in Excel is either by choosing 'Open With' and select Excel or open Excel first and
Converting .xls to .xlsx - Microsoft Community
2019年8月23日 · If you want to convert .xls file to .xlsx file and you don’t have may .xls files, we’d give you some workarounds and hope that will help you: When you open older format files, you will see "Compatibility Mode" in the title bar after the file name. You can use the "convert" function. Click on the Office button, then Convert.
XLSX File Type not Recognized (Windows 11) - Microsoft Community
2024年1月24日 · I can open .xlsx files in Excel if I specify to use Excel. I cannot set Excel as the default program, as Windows won't allow me to 'Always' Open With any program for .xlsx files. I cannot find .xlsx as a file type recognized in Windows Default Apps menu, which I believe is contributing to the above issues
why can't I save xls file as xlsx? - Microsoft Community
Here are some troubleshooting steps to help you save your file in the desired format: Make sure you're using a compatible version of Microsoft Excel: The .xlsx format is used in Excel 2007 and later versions. If you're using Excel 2003 or an older version, you might not have the option to save the file as an .xlsx.
XLSX files not opening - Microsoft Community
2018年12月12日 · 4. If this doesn't fix the association, when you right click on .xlsx file > Open With > You should get the list of programs which can open this file and you should select Excel. In case, the list of program doesn't have Excel, then choose BROWSE and select Excel.exe.
converting .xlsx workbook to .xls format in Excel.
2017年11月3日 · Open your workbook that you want to convert the format. Click File > Save As. The Save As dialog will display, specify a folder to place the new format of the file, and then click Save as type drop down list to choose Excel 97-2003 Workbook. Click …
why have my .xls files been changed to .xlsx files without my ...
2018年3月7日 · I created files recently in excel 2010 .xls format using my purchased version of Excel 2010. On looking at windows explorer today the file icons were blank and the file extension had been changed to .xlsx. If I double click to open the file there is a message to say that no application is set up to open the file.
OpenDocument Format Set as Default File Extension when Saving …
2024年3月1日 · Also, remember that the default file format applies to new, untitled documents. If you save a new document using an existing document as a starting point, via the Save As dialog box, Word suggests whatever file format is the current one. But you can choose any supported file format that you want.