Unable to open Excel worksheet from Outlook or Explorer

I had a need to open several spreadsheets, side-by-side, on two separate monitors.  I was told that checking the "ignore other applications that use DDE" checkbox in the Excel Options - Advanced tab.

I am now able to open two separate instances of Excel, but can only open actual workbooks by saving them and then navigating to them via the Excel - Open menu.  I cannot double click on the workbook in Explorer or Outlook to open the file.

Is there a way to configure my system for multiple instances of Excel that doesn't screw up my ability to open the file directly from Outlook or Explorer?
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Dale FyeAsked:
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Yes there is a way.

1:Open a new Excel instance

2: Instead of using file menu to open the Excel file. Drag and Drop your Excel files inside a sheet in this Excel file.

This way you can have as many independent Excel instances as you want. So each time open  an expmty excel and drag drop an excel file into it.

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Dale FyeAuthor Commented:
Not very convenient, but it works.
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Microsoft Excel

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