Question: Two excel file open one time but one close and secount auto closed why?........? 

Answer: Because your closing the whole Excel. \n\nWhen you open a file. And you have excel loaded with an existing workbook it just creates another workbook on top of the one you are working on.  \n\nBy clicking on the X button on the very upper right hand corner it closes everything. There should be another X button but somewhat  below your toolbars to close individual workbooks
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