Hi @wrain ,
If for some reason you don’t see a toggle in the new Outlook for Windows, try these troubleshooting steps:
- Make sure you try to launch classic Outlook for Windows from the Windows Start Menu, not the new Outlook for Windows. The new Outlook for Windows has a “New” tag on its app icon. For classic Outlook, select the icon without a “New” tag.
- From the Windows Start Menu, type “Registry Editor” in the search box and select the Registry Editor app.
- Navigate to the following path: Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Preferences
- Scroll to the bottom of the list to and double click on UseNewOutlook.
- Enter 0 in the Value Data field.
- Attempt to launch classic Outlook for Windows from the Windows Start Menu.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.