We detected a problem launching the new Outlook

We detected a problem launching the new Outlook

This error might launch when you toggle from New Outlook back to Classic Outlook (desktop application). I got this error when I was doing my testing from New Outlook to Classic Outlook. I clicked on the OK button and my Classic Outlook launched fine. If you click on OK and your past Outlook doesn’t launch, I can help you get back to it. Please use the form below to contact me. Due to my not knowing what configuration you had setup, I cannot give free advice on this error.