Using older versions of Outlook for Mac for personal email and calendar
Dear Martin_476,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
Based on your description, I understand that you have a query "Outlook for macOS: Dropping attachments (randomly)". Are you referring to outlook on mac latest version that is 16.73, not 16.75?
After thorough research and testing, it appears that this is current happening to most users with this version. We apologize if we are not able to meet your requirements; however, thank you for bringing this to our attention, we will surely raise your concerns to our Product Team and hopefully this can be considered in the future updates.
In the meantime, you may create an entry as a feature suggestion in the Feedback Portal at Outlook · Community (microsoft.com), Other users may vote it and make it more visible to the service team so that it may be considered for future upgrades.
For other concerns, please do not hesitate to add you post in the Microsoft Community Team.
Thank you for your cooperation and understanding.
Sincerely,
De Paul | Microsoft Community Moderator