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When selecting "Open" Firefox is appending ".XSLX" to CSV files in Excel.

Hi All,

I'm trying to export a CSV file from a website and when selecting "Open", Firefox is appending ".XSLX" to CSV files in Excel and I cannot open the file.

Saving the file works fine (saves in CSV) but it is a little annoying that I cannot open the file without having to save and then open it.

Any suggestions would be greatly appreciated.

Cheers Sam

Hi All, I'm trying to export a CSV file from a website and when selecting "Open", Firefox is appending ".XSLX" to CSV files in Excel and I cannot open the file. Saving the file works fine (saves in CSV) but it is a little annoying that I cannot open the file without having to save and then open it. Any suggestions would be greatly appreciated. Cheers Sam
Attached screenshots

All Replies (1)

Hi SamT, It looks like you need to change what action Firefox takes for defined content types. This article should offer all of the information that you need: Change what Firefox does when you click on or download a file