2] Disable hardware graphics acceleration for Outlook and see if this helps.
To do this, open Outlook program box and click on OK/Apply and Exit. If it makes the issue go away, then its probably some issue with your video driver. Hardware Acceleration uses computer’s hardware for performing a certain task and function faster than would be possible using a software. So turning it off is one thing you can try if you receive a Program not responding message.
It provides great flexibility by acting as a connectivity tool for many professional software.
If the situation doesn't change, see below for more potential causes/solutions.
Scenario: Microsoft Outlook offers a complex mechanism for programming Outlook add-ins.
Check the "Include the selected account in this group" box.9. You will notice 2 tabs above the list of folders, "All" and "Subscribed".
Microsoft Outlook is one of the most advanced, yet complex email client software.
Below are some common techniques you can try to resolve these kinds of issues.