How do I prevent Outlook 365 on the Mac from launching the New Version

Anonymous
2023-04-24T16:04:10+00:00

When I updated to the New Version on my Macbook Pro M1, my database essentially was disabled. All the On My Computer emails were strewn all over the place and it was impossible to move anything. I had to restore my entire computer from Time Machine to get it back.

Now Outlook is threatening once again the New Version when I restart Outlook. How in the world do I prevent this from happening, as it is destructive to client-based email. I can't see a way to disable this.

![](https://learn-attachment.microsoft.com/api/attachments/6a89cef7-148a-48fb-928c-6197a09f0ae5?platform=QnA Thank you.

Outlook | MacOS | Legacy Outlook for Mac | For home

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  1. Anonymous
    2023-07-31T10:36:18+00:00

    Just to add to the dissatisfaction over this new Outlook for Mac. It is awful, it automatically opened a few weeks ago and left me with the same symptoms as others: all calendar entries had disappeared, email folders scattered all over the place, extremely limited viewing options on email lists. Absolutely awful. I reverted to old Mac and, thank god, all was OK. And now my Outlook is telling me that it will auto-open the new Outlook next time I restart. Who the hell do MS think they are? Offer me the option by all means, but don't force this **** on me. I don't need to be told by MS what I do and do not need to do with MY computer.

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  2. Anonymous
    2023-07-31T12:03:26+00:00

    I posted this earlier, but its worth posting again as a fix to this Microsoft Office update problem on the Mac:

    1. Open Terminal
    2. Type in:

    defaults write com.microsoft.Outlook EnableNewOutlook -int 0 

    1. hit enter

    Outlook will cease to try and update itself.

    To re-enable:

    defaults write com.microsoft.Outlook EnableNewOutlook -int 1 

    Recently this happened on my wife's computer and the only way to fix all the misplaced emails located on the client computer was to restore the database folder using Time Machine:

    /Users/username/Library/Group Containers/UBF8T346G9.Office

    It's absolutely incredible that Microsoft is subjecting its customers to this kind of negligence.

    Good luck!

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  3. Anonymous
    2023-07-31T13:08:35+00:00

    Hi Diana,

    This document covers Outlook preferences on the Mac, and explains the Enable New Outlook functionality. It's best to think of this as a hidden button in Outlook > Preferences, rather than a "work around".

    At a very basic level, Outlook stores your settings in one folder, your Outlook Profile data in another, and your application data in a third place - the command used here does not directly affect anything in your Profile and I wouldn't expect any problems.

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  4. Anonymous
    2023-07-31T17:39:35+00:00

    Many thanks Randall, this worked just right.

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  5. Anonymous
    2023-07-31T17:41:27+00:00

    Thanks Richard, your helpful response somehow ended up in my box - I have now stopped this awful new version of Outlook from auto-opening.

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