This article is from the Spreadsheets FAQ, by Russell Schulz casfaq@locutus.ofB.ORG with numerous contributions by others.
...(sometimes my AUTOEXEC.BAT and CONFIG.SYS,
sometimes all my Windows files) that it tries to open as Excel
workbooks. What happened?
it is opening all the files in the Alternative Startup File Location.
delete the setting via:
Excel 4:
load the AltStart addin and clear the entry
Later:
Tools|Options|General|Alternate Startup File Location
with some later versions, you can start Excel with a flag
excel /AUTOMATION
to temporarily disable this action (which makes it easier to
get to the menus to turn it off)
 
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