SharePoint “Import Spreadsheet” App fails with error “An unexpected error has occurred. (-2147352567)”

Summary: You are using the SharePoint “Import Spreadsheet” App and when the “Import” button on the web page is clicked this error is shown in the web browser: “An unexpected error has occurred.  (-2147352567)”   Cause: Security restrictions are preventing the web page from starting and using Excel.exe.   Workaround: Delete or modify this registry value:…

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