Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
You have two choices. Since multiple versions of Excel can be installed, you could reinstall Office 2007, marking all applications other than Excel as "Not available" in a custom install, leaving the existing Excel 2010 in place. Alternatively, you could first modify the installation of Office 2010 to mark Excel as "Not available" to remove it and then perform a custom install of Office 2007 and select only Excel.
Brian Tillman [MVP-Outlook]
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