Switch from 'new' Outlook (2023) to 'classic' outlook

Anonymous
2023-04-18T20:26:13+00:00

I need to go back to the Classic version because the 'new' Outlook lacks some features that I need for work.

This webpage https://support.microsoft.com/en-us/office/getting-started-with-the-new-outlook-for-windows-656bb8d9-5a60-49b2-a98b-ba7822bc7627 states "You can switch back whenever you want, just switch the toggle off in the new Outlook and it will automatically open the classic version."

There is no toggle. Is there any other way I can undo this update and go back to the previous version?

EDIT: Moved FROM Microsoft 365 Insider / Outlook / Windows TO Outlook / Outlook for Windows / For business.

Outlook | Windows | Classic Outlook for Windows | For home

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Anonymous
2023-04-19T15:15:49+00:00

Once flipped on, the toggle is irrelevant since the "old" version still exists. Just run it. You should still be able to find its shortcut in Start (and wherever else you might have had it before), but if not you will see outlook.exe in one of these places (may vary slightly depending on edition), so if necessary make a new shortcut:

C:\Program Files\Microsoft Office\root\Office16

or here:

C:\Program Files (x86)\Microsoft Office\root\Office16

The nice thing about the New Outlook is that it's not an either/or proposition (like New Teams is). You have both old and new. You can even run them concurrently.

But if running that actually runs New Outlook for you (some have reported that's the case), then either:

  1. Uninstall Outlook

or

  1. run Regedit.exe and go here (or the same with 15.0, if you don't have 16.0):

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Preferences

And in that you will see UseNewOutlook

Set it to 0, which means that running old Outlook actually runs it.

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  1. Anonymous
    2023-06-15T18:01:43+00:00

    If you go to your start menu, you should see two versions of Outlook. I have two. One is the old version and the other one is the new one. Hopefully this helps you get back to the old one. There are alot of missing features in the new version that is needed for my job.

    Image

    Thank you!! This was the only solution that was helpful. For me the toggle only appears in classic outlook. It's not in new outlook. Seems like microsoft should put the toggle in the new outlook too so users can switch back and forth if needed.

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  2. Anonymous
    2023-06-16T17:17:39+00:00

    This tweet might be of interest to some: https://twitter.com/mdreinders/status/1669700902175797251

    It shows that Microsoft isn't beginning transitioning the Mail and Calendar app (the one built-in to Win10/11) until September 2024. That strongly suggests that Outlook won't happen until sometime after that given how much more complex it is and (presumably) how many more users it has. My guess would be about a year after that, when editions of Office before 2021 go out of support.

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  3. Anonymous
    2023-06-20T17:50:46+00:00

    Hi RSeiler,

    I didn't have that registry key either and did not modify my programs, I was able to revert to old outlook by clicking on the old icon like you recommended. Maybe the icons are so similar some people cant tell the difference?

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  4. Anonymous
    2023-06-21T17:34:03+00:00

    Same thing for me. Worked when I removed it from the task bar. Agreement with everyone else the new outlook sucks.

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