The preview function in Outlook is not working properly. The preview is zoomed in too much. Also sometimes the toolbar on the bottom of the previewer that contains the zoom and page up and down buttons is all messed up.
Please try the steps below:
1. Open Registry Editor
2. Go to: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Modules\GlobalSettings\Sizer
3. Right-click the Sizer folder, choose Export, and save this backup anywhere you'd like.
4. Right-click the Size" folder again, choose Delete and confirm it.
5. Restart your computer.
After restart, you may try dragging the window over to the new display and see if that fixes the problem.
If the above steps don’t work, please upgrade to the latest build of your Windows.