Multiple Office Installs - Export to Excel Option Available but Excel Does Not Launch

I have a client running Sage 500 2019..   Excel 2010 was originally installed on the server.   Export to Excel worked.    However, someone tried installing Excel from Office 365.   They didn't have the correct licensing for Office.    Office 365 was uninstalled and Excel 2010 remains.   

Business Explorer correctly creates the tmp file for the Export but Excel fails to launch.   

Any suggestions to fix without reinstalling the OS. 

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