Blue Question Mark Icon Microsoft Office Mac

Blue Question Mark Icon Microsoft Office Macbook
Blue Question Mark Icon Microsoft Office Mac
Blue Question Mark Icon Microsoft Office Mac Free
Blue Question Mark Icon Microsoft Office Macbook Pro

If recipients see a Red X (on Windows) or a blue question mark (on Mac) when your email is sent from Outlook on Windows, it's caused by a missing registry key on the senders Windows PC.
Sent from Outlook on Windows.
A registry key is missing on the Windows PC where the email is sent.
Since the registry is not missing when Outlook is installed by default, only a few users should be affected.
If many users are affected, reach out to your IT who installed the Outlook client.

Re: Office 365 Downloadable Icons @Christopher Hoard That's great, thanks so much, I'm still missing Intune and Azure Information Protection from the Microsoft 365 Business Premium subscription level. Last week when attempting to open Outlook, the icon bounced in the dock and the application never opened. I had to force quit. Multiple retries resulted in the same. I was using MS Office 2016 for Mac. I upgraded to MS Office 2019, hoping that would resolve the issue.

Symptom

Red X show on Windows:

Blue question mark show on Mac:

How to verify the issue

Right-click the email in your inbox with the Red X and select 'Source'.
Search 'src=' and you'll see images reference to a local location which means that the image will not show at the recipient's end because the images/logo are maybe stored in sender's local disk.

Resolution