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I've located the answer between the MS Support site for Excel and the HELP file in Excel itself.
"C:\Program Files (x86)\Microsoft Office\root\Office16\EXCEL.EXE" /e "C:\Users\YOURCOMPUTERNAME\desktop\YOURWORKBOOKNAME.xlsm"
The hardest thing was locating the executable for EXCEL. It wasn't where MS said it should be. Pretty easy after finding EXCEL.
The " /e " switch turns off the start up form ... when used in combination with the path to the specific workbook ... NO START UP FORM !!!
You'll need to create a NEW SHORTCUT to the workbook you want to open. Then use the above command in the path requested for the shortcut.
Cheers.
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