New excel file cannot open because the file format or file extension is not valid

fayaaz 

Hi. When I right-click on my desktop and create a new Excel file and try to open it, it gives the error "Excel cannot open the file 'New Microsoft Excel Worksheet.xlsx' because the file format or file extension is not valid"

I am not trying to recover any data just want to fix the issue.

I can open other existing excel files and can even create a new workbook from the excel app when its opened but I want to know why this is happening and how to resolve it.

Hi.

You've had well over 100 views without response. I suspect it's because the description you give doesn't really make sense.

When, for example, I follow those opening steps you describe and I "right-click on my desktop" I don't get any prompts to create an Excel file of any kind, or, for that matter, any other kind of file; I get prompted instead, .... well, here, let me show you

 So I can't begin to visualize what you're even doing to get you into this situation, especially since you conclude, as you do, with the statement that you can do all the normal things in the normal way without any problem. 

So I think you may be leaving others--those who've not responded at all--as you do me, wondering what the problem actually is.