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danfennelly's avatar
danfennelly
Copper Contributor
Jan 01, 2026

DO NOT UPGRADE TO "NEW OUTLOOK"

I would recommend not upgrading to "new outlook" - it is the worst implementation I've seen in over 30 years.  It is not an "upgrade" to outlook it is a brand new application that really sucks. rules you can't change, almost no integration to contacts, contact application sucks. I can't go back because going to "new outlook" changed my mailbox. I am currently trying to move off outlook to another application - any recommendations. This implementation of Outlook is unusable. DO NOT GO TO "NEW OUTLOOK" until microsoft fixes about 100 problems. 

1 Reply

  • Hornblower409's avatar
    Hornblower409
    Brass Contributor
    Jan 04, 2026

    -- I can't go back because going to "new outlook" changed my mailbox. 

    Not sure I understand what "changed my mailbox" means. Can you give some more details please.

    You should absolutely be able to switch back to Classic Outlook. There are numerous guides. e.g.
    https://support.microsoft.com/en-us/office/toggle-out-of-the-new-outlook-for-windows-ec102b39-5727-418e-ae1f-a1805434640c

    If that doesn't work for you, come back here are tell us where the process went off the tracks.

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