Lately I’ve been recreating some our group policies. One thing that wasn’t consistent was that some of our client machines were showing different results on the Advanced tab of IE settings. Most of them were fine but the one that seemed to cause the issue was that some of the clients were enabling the following Advanced setting:
Do not save encrypted pages to disk
This was causing Outlook to not display images from certain senders.
To resolve this i applied the following group policy setting:
User Configuration\Policies\Administrative Templates\Windows Components\ Internet Explorer\Internet Control Panel\Security Pages\Advanced Page\Do not save encrypted pages to disk
I changed to Disable and the pictures starting loading.