I recently updated and encountered a problem with an older xls-formatted spreadsheet.
When I tried to open it, Excel said it was corrupted. It gave me the option to open the file but it contents were jumbled and unrecognizable.
I opened a copy of this file on another computer with Excel 16.40, no problem, and was able to save it in XLXS format and transfer it to my main computer.
I have not encountered this problem opening other XLS spreadsheets, so not sure if this is an intermittent bug with version 16.41 or truly a corrupted file.
Just passing this along in case someone else has the same experience.