Replies to post #35986 on Computer Learning (HELP)

[PMS Witch]

Funny thing, win10 tries to open that extension now. . .

Not widely known. . .

If a file is an .EXE type executable, Windows will execute it no matter what filename extension you use. The only requirement is to use the new extension.

Cheers, PW.

P.S. I doubt Opera would be trying to execute a file with .OLD as the extension. Maybe something else is going on.