When I open a preview of an Excel File I got as an attachment in Google Mail, Google changes all the date formats to "US style"MM/DD/YYYY although the original file uses "German format"DD.MM.YYYY.
Is there a way to prevent this, or show all dates in my desired format (DD.MM.YYYY)?
I already checked that the language the Account-Settings (myaccount.google.com) under Data & personalization -> language is set to German (Germany).