SDL MultiTerm Convert can not convert Excel files

Hello,

I have currently trouble converting an excel file from .xls or .xlsx into a glossary that can be used in Trados Studio 2017. I was trying to follow this (https://www.youtube.com/watch?v=RSRow6w4UdM) instruction in order to convert the file, but whenever I am at step 4/9, i.e. choosing a file, I get an error message. I have selected the correct source file and when I press next it says "The file cannot be opened in Microsoft Excel.". My Office version is 2016 and it works without problems. I have even tried to uninstall and reinstall Office, but that did not work either. Does anyone have any suggestions on how to solve this issue?

Best regards.