I use Office 2010, and have had occasional problems sending attachments with Outlook 2010 to Mac users. This happened again today.
I sent my friend a mail from Outlook with two attachments, one .DOCX, the other .XLS. My correspondent advised the message showed only an attachment entitled Winmail.dat. I saved the Excel file as .XLSX, sent it (only) again, and sent the same .DOCX file as an attachment to a separate mail. Both were well received.
What I cannot work out is whether the problem arises because of my settings, or those of my correspondent.
Researching this suggests that this can arise because of the message format settings in my Outlook 2010. The setting in my Outlook 2010 is to compose messages as HTML – File > Options > Compose messages, which many posts say is the critical setting. However, this setting seems to apply to how the message text itself is received. I can’t see how that should affect how attachments are received.
Is the solution to this in my hands, or should my correspondent be making changes?
Dell E5570 Latitude, Intel Core i5 6440@2.60 GHz, 8.00 GB - Win 10 Pro