My recent chat history disappear though I did not delete them

Thi Kim Thao Phan 0 Reputation points
2026-10-12T22:05:23.4066667+00:00

Microsoft Copilot chat history disappeared.

I created a folder containing multiple Copilot conversations and several chats were pinned. I did not delete them.

The entire folder has disappeared, and the pinned conversations are no longer visible. I am signed into the correct Microsoft account.

The missing conversations contain academic research and course-related work. Could you please investigate whether this is a synchronization issue and whether the folder and conversations can be restored?

Microsoft Copilot | Windows Copilot | Copilot+ PC
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  1. Vikki-T 12,070 Reputation points Microsoft External Staff Moderator
    2026-10-13T08:20:58.2033333+00:00

    Hi Thi Kim Thao Phan,

    I understand why this is concerning, especially since the missing conversations contain academic and course-related material.

    To narrow this down, could you please confirm whether you are using a personal Microsoft account or a work/school account? Also, are the folder and pinned conversations missing both in the Copilot app and when you sign in to Copilot on the web with the same account?

    If this is a personal Microsoft account, you can check whether the older conversations are still associated with the account by signing in to the Microsoft Privacy Dashboard and choosing Export all activity history under the Copilot activity section. Please avoid selecting Delete all activity history. The exported file can help determine whether the conversations still exist in the account history, although exporting them will not restore the folder or pinned items in the Copilot interface.

    If the conversations are missing from both the app and the web, I recommend contacting Microsoft Support and describing the issue as missing Copilot chat history and folders. Include when the content disappeared, the devices affected, and whether the missing conversations appear in the activity-history export.

    Please note that this is a user-to-user support forum, so contributors cannot access account data, investigate back-end synchronization, or restore conversations directly. Microsoft Support would be the appropriate channel to check whether any account-level recovery options are available.

    Microsoft’s official guidance on exporting Copilot history is available here: Manage your Copilot activity history in the privacy dashboard. Thank you so much for your understanding.   

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  2. AI answer

    2026-10-12T22:05:37.82+00:00

    If the correct Microsoft account is already in use, the most likely supported causes are either an ongoing move to the updated Copilot app or content that is temporarily not syncing across devices.

    Try this end-to-end check:

    1. Restart Copilot
      • Close the Copilot app completely and reopen it.
      • If using Copilot on the web, refresh the page.
      • Expected result: chats, pinned items, or migrated content may reappear after the app reloads.
    2. Check for in-app migration messages
      • If chats are still being moved to the updated Copilot experience, an in-app message may appear with a link to existing chats and content.
      • Expected result: temporary access to older chats while migration completes.
    3. Allow time for sync/migration to complete
      • Microsoft states that chats and content can still be moving, and the time varies depending on the amount and type of content.
      • If devices show different chat histories, this can also indicate the move is still in progress.
    4. Check whether only some content is missing
      • Most chats, images, and other eligible Copilot content move forward automatically.
      • Some retired feature content is handled differently and may not carry forward.
    5. Check the left navigation for renamed content
      • If the missing item was a Project, it now appears as Notebook in the updated Copilot app.
      • Expected result: previously saved Projects appear under Notebooks.

    What is supported about restoration:

    • The documentation confirms that chats, images, and most other eligible Copilot content move automatically to the updated app.
    • It also confirms that some content may be temporarily unavailable during rollout.
    • No supported self-service restore process is provided for restoring a disappeared folder or pinned conversations specifically.

    What can be concluded from the available guidance:

    • This can be consistent with a synchronization or migration delay.
    • Folder-specific recovery or pin restoration steps are not documented in the provided guidance.
    • If the chats were part of normal Copilot chat history and become visible again, individual conversations can be deleted from the Chats list, which confirms that chat history is stored and managed there.

    If the missing conversations do reappear and any contain sensitive academic work, consider keeping copies outside chat as well, since files shared and generated in the Copilot app are stored in OneDrive.

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

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