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.

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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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

2023-05-15T19:32:10+00:00

I booted up my WIN 10 laptop and found Outlook will open as OLD OUTLOOK from the desktop icon and there is no Toggle on/off NEW OUTLOOK. However, if you log into Office365 on WIN10 laptop and select Outlook it will open as NEW OUTLOOK as it maps to Outlook.live.com. There is no toggle to switch to OLD on either version or way of accessing Outlook

The OUTLOOK toggle only appears on WIN11 when logging in through the desktop icon or apps menu. There is no toggle change NEW to OLD when logging on through Office365 which maps to Outlook.live.com
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Anonymous

2023-05-15T19:40:29+00:00

It works and my functionality is back to how it was (along with the reappearance of the "Try the new Outlook" toggle). One should not be so happy at restoring a piece of software but I am ecstatic! Thank you so much for your help, rseiler. I really appreciate your time and you sharing your knowledge. I am sure that this thread will help others in the same situation. Thank you 😊
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Anonymous

2023-05-18T17:48:30+00:00

Thanks rseller.

I'll give that a whirl tomorrow and post back
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Anonymous

2023-05-20T15:05:59+00:00

Thank you so very much! The idiots at Microsoft pushed this update which erased the file I used for an old POP account that is still active. They didn't just leave it there, they erased it! WTAF Microsoft? Years of old emails from my parents (who are no longer here), stuff I bought, warranties, license keys, etc. All erased. I wonder how that engineering meeting went? Hey, you know what, when users do the update, we should help them by destroying all their old email files. Luckily, I had a back up and was able to recover the files and thanks to rseiler, get my old version back. So infuriated that they are this stupid.
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