Hi Inksrm,
This is a known bug, many users have encountered this issue. Microsoft is very concerned about this and is working on solving it.
1, First, check if the issue is resolved by clearing the browser cache:
Close all IE and Outlook Desktop windows and make sure through Task Manager there are no remaining IE processes running.
Then try to use the Dynamics 365 App For Outlook search records. Does this issue still exist?
2, If this bug only appears in desktop client and clearing the cache via Internet Options does not help, please try clearing it via F12 chooser:
Here is the process (steps are not applicable for Windows 7):
a) Open Dynamics app in desktop client
b) Open IEChooser.exe in %WindowsFolder%\System32\F12
c) Click on Dynamics 365 thread
d) Go to Network tab and click clear cache button
After the above steps, is the issue solved?
3, We recommend that you raise a Microsoft support ticket for professional help.
Before that, please capture a Fiddler trace while reproducing the issue. It is critical that you follow these steps to correctly capture the needed tracing and limit the amount of data:
a) Wait for the app to load.
b) Before performing the search, start Fiddler to begin capturing the network traffic.
c) After the search completes and does not return records, immediately stop the Fiddler capture.
When raising a support ticket, please submit the generated Fiddler log as an attachment. This will help Microsoft engineers find the cause of the issue.
We all hope that this issue will be solved as soon as possible!
Hope this helps.
Best Regards,
Lu Hao