Using New Outlook on Windows for personal email, calendar, and contact management
Hi,
I had the same issue with Outlook and sharing from PowerPoint, how I resolved it:
Click on your Windows Start button
Click on Settings
Select Apps
Select Default apps
Where it says Set defaults for application, use the search apps function
Look for "outlook (new)"
Click on Outlook (new)
Now for every file type or link type you see in this screen, change the default from Outlook to Outlook (new)
This should resolve your issues.