how to stop treating xlsx files as zip files?

[jaceyebert]

Now in totalcmd ,once you double-click a xlsx file,it will show the inner folder in the file as a zip file .
I don't like this way , how to make the excel to open it by double-click?

[Horst.Epp]

Looks like you don't have any app registered for xlsx extension.
Just right click and click on the name on top of the list.