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Outlook just reverted back to old style

Kevin Watson 0 Reputation points
2026-06-02T17:41:25.61+00:00

Hello,

My desktop outlook just reverted back to the "old style" look. In the process its no longer showing 2 of my connected email accounts, and it is also showing an email I have disconnected. I so not see a way to get it reverted back to the " new look". How do I get it to revert back?

Kevin

Outlook | Windows | New Outlook for Windows | For home

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  1. Winnie-B 7,940 Reputation points Microsoft External Staff Moderator
    2026-06-03T03:28:01.6833333+00:00

    Hi Kevin Watson

    I understand your Outlook suddenly switched back to the classic (old) layout and your accounts don’t match what you had in the new experience.

    Have you already tried the Q&A Assist suggestions? In addition, could you confirm:

    • Are you using Outlook.com / Gmail / another personal account, or something tied to work/school?
    • When you open Outlook now, does it show “Outlook (classic)” in the title or Start menu?

    In the meantime, please try the following:

    1, Make sure you are opening the correct app

    • Click Start menu
    • Search for:
      • “Outlook” (this is usually the new Outlook)
      • “Outlook (classic)”

    Try launching the one labeled “Outlook (new)” first. Sometimes Windows updates default to opening the classic app instead.

    2, Re‑add accounts after switching back to new Outlook

    Even though Microsoft tries to migrate accounts automatically, it doesn’t always carry over everything (especially older or connected accounts).

    After opening new Outlook:

    • Go to “Settings” > “Accounts” > "Email Accounts"
    • Re‑add any missing email accounts
    • Remove any accounts you no longer want

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  2. AI answer

    2026-06-02T17:41:39.7066667+00:00

    To get back to the new Outlook experience and restore the correct accounts, follow these steps in order:

    1. Check for the new Outlook toggle
      • Open classic Outlook.
      • Look in the upper-right corner for a Try the new Outlook or New Outlook toggle.
      • If present, turn the toggle on. This will download/open the new Outlook for Windows and migrate your accounts and settings.
    2. If Outlook keeps redirecting or you want to switch from new → classic and back
      • In new Outlook for Windows, use the toggle in the top-right:
        • Choose Switch back to classic Outlook to return to classic permanently.
        • Or Use classic Outlook this time if only needed temporarily.
      • If classic Outlook is not installed, install it using the store link described in You can't open classic Outlook on a new Windows PC (linked from the toggle article below).
    3. If the toggle is missing in new Outlook
      • Make sure classic Outlook is actually installed:
        • From the Windows Start Menu, look for Outlook (classic).
      • If installed but you still do not see the toggle in new Outlook, reset the registry flag:
        1. Open Registry Editor from Start.
        2. Go to: Computer\\HKEY_CURRENT_USER\\Software\\Microsoft\\Office\\16.0\\Outlook\\Preferences
        3. Double‑click UseNewOutlook and set Value data to 0.
        4. Close Registry Editor and launch Outlook (classic) from Start again.
        5. Use the toggle to move back into new Outlook.
    4. If the toggle is missing in classic Outlook
      • The toggle may be hidden by policy or unsupported for your account type. In that case, the new Outlook switch will not appear. See the “The try new Outlook toggle doesn't appear” section in the article below for reasons (for example, certain one‑time purchase/standalone Outlook licenses or admin policies).
    5. Fixing missing/incorrect accounts
      • After switching back into new Outlook, sign in with the correct Microsoft account and re‑add any missing email accounts from Settings → Accounts.
      • Remove any accounts that should no longer appear.

    If classic Outlook opens instead of new Outlook when you start Outlook, use the toggle in classic Outlook (when available) to switch back to new Outlook; if you are always redirected to new Outlook, use the toggle in new Outlook as described above.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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