Problems sharing .xls spreadsheet via WhatsApp

[G_Carbone]

Hello everybody.

Many thanks for accepting me on this forum.


This is my first question, so please forgive me if I'm not good enough at asking. I've saved a spreadsheet in the old format .xls on my MacBook and shared it via WhatsApp. Some of the recipients have informed me that the file is not usable both by Android and iPhone smartphones. Could please anybody help?

 

[Kyle123]

Have you tried saving it as xlsx?

 

[G_Carbone]

Have you tried saving it as xlsx?

Yes and that's the point.

I used to share my excel files in the more recent .xlsx format, and everything was going fine. Unfortunately, somebody in the group asked explicitly for the old format, and there is where all my troubles started.