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.
Just realized the problem also exists when trying to open certain (but not all) XLXS formatted spreadsheets. Deleted and re-installed Excel, updated to version 16.40 and problem disappeared.
Definitely a problem with Excel update 41 !