Loss of copilot chat history after updating from legacy Copilot account

Dave Hollis 0 Reputation points
2026-11-01T13:40:31.05+00:00

My personal Copilot chat history was present immediately before upgrading to the new Copilot on 1 November 2026. After the upgrade, all chat history disappeared. I have verified all my personal accounts and the history is missing across all devices. My work account remains unaffected. This appears to be related to the upgrade or migration process.

Microsoft Copilot | Windows Copilot | App
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  1. AI answer

    2026-11-01T13:40:46.73+00:00

    This matches the documented migration behavior for the updated Copilot app: chats and other eligible content should move automatically, but the move can take time and may temporarily appear missing after the upgrade.

    Use this checklist:

    1. Confirm the same personal sign-in method is being used everywhere.
      • Sign in with the same personal Microsoft account, Google sign-in, or Apple sign-in that was used before the upgrade.
      • If Google or Apple was used previously, select Continue with Google or Continue with Apple again.
    2. Restart Copilot on each device.
      • Close the app completely and reopen it.
      • On the web, refresh the page.
    3. Check for in-app migration messages.
      • If chats are still moving, the app may show a link to access previous chats and content temporarily.
      • A “coming soon” message means the account has moved, but chats and content are still on the way.
    4. Allow more time for sync and migration.
      • The completion time varies based on the amount and type of content being moved.
      • Different devices can temporarily show different chat sets while migration completes.
    5. Verify whether missing content is from retired features.
      • Regular chats and most eligible content should migrate.
      • Group Chat content does not carry forward after account updates.
      • Projects now appear as Notebooks in the left navigation.
    6. If the issue continues, report it from the Copilot app.
      • Select the ellipsis (…) in the upper-right corner.
      • Select Send feedback.
      • Select Report a problem.
      • Include when the problem started, device, operating system, and a screenshot.

    Relevant to the described scenario:

    • Personal and work accounts remain separate by design, so an unaffected work account is consistent with the documented behavior.
    • If multiple personal accounts are used, each account can move at different times.
    • Files shared or generated in the Copilot app are stored in OneDrive, but chat history migration is handled separately.
    AI-generated content may be incorrect. Read our transparency notes for more information.

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