Support for Microsoft XLSB/XLSM file types

To provide users with more flexibility in how they work across different files in Box, we will soon be releasing additional support for Microsoft XLSB and XLSM file types. Within two weeks, users will be able to preview XLSM and XLSB files with Excel Online’s interactive preview experience within Box (i.e., scroll through sheets and browse tabs without opening the file). Additionally, users will also be able to open XLSB files with Excel Online.