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

Anonymous

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.

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Anonymous

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:

Uninstall Outlook

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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177 additional answers

Anonymous

2023-06-09T13:37:11+00:00
I tried out the new version of Outlook yesterday. It was horrible. It crashed 3 times within the first 5 minutes of use. I have tried to file a help ticket, but it crashes before I can finish typing. It is unusable to me...and there is NO WAY TO RETURN TO THE PREVIOUS VERSION

The solutions offered here don't work, and in fact, don't match up to what my system is showing.
1. There is no toggle
2. The string in registry editor doesn't exist. I get to HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\ and the options I have are either 15.0 or Common.
3. there is no Previous version of outlook shown in my start menu.
Can anyone offer other options...or at least a way I can get in contact with support?
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Anonymous

2023-06-09T13:31:32+00:00

i mean i uninstalled outlook pre, not mail, in hopes that i would be able to go back to mail as it was before i toggled it. i always equated mail to outlook... i guess i was confused and I'm looking for solutions in the wrong place. thanks though!
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Anonymous

2023-06-09T13:18:30+00:00

I desperately need windows mail back, please help.

Windows Mail (a.k.a. Mail a.k.a. Mail and Calendar)?! I haven't seen anyone mention that yet. You apparently aren't referring to Outlook then, which explains why the Registry section was irrelevant.

Running Mail for the first time in a while, I see it does have the toggle, so Microsoft is intending to replace it with new Outlook, too (which makes sense). If you're saying that it was uninstalled, which would be interesting, just reinstall it: https://apps.microsoft.com/store/detail/mail-and-calendar/9WZDNCRFHVQM
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Anonymous

2023-06-09T12:52:12+00:00

Great, I know the feeling of relief getting my Classic email back.
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