Copilot chat missing after update. 3 months work lost. Chats error/blank

Andrew Rodgers 0 Reputation points
2026-10-05T21:06:44.3666667+00:00

Business-critical issue: approximately three months of project research and development work stored in a Copilot conversation titled "MAIN: Starting a Seaweed Farm in the Hawkesbury" is missing following a Copilot update. Other historical chats are also opening blank or displaying errors. I click onto the latest copilot chat in history 1502 (Sat) - this address appears https://copilot.microsoft.com/chats/UrCNSKaLC9BBNx8uTePQe and then it changes to another address really quickly - empty screen with what can I help you with box...can't copy as well to show - but it's definitely changing on and it's a new chat - nothing from the past 3 months is there at all.

Microsoft Copilot | Other
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  1. Vikki-T 11,775 Reputation points Microsoft External Staff Moderator
    2026-10-06T07:09:36.67+00:00

    Hi Andrew Rodgers,

    I understand the impact this has, especially when the affected conversation contains three months of important project work. Since selecting the old chat briefly shows its original address and then redirects to a blank new conversation, the history may not be loading or synchronizing correctly after the Copilot update.

    Please confirm that you are signed in with the exact same account and sign-in method previously used with Copilot, then check the conversation from Copilot on the web and another device. Also look for any in-app message or link that allows access to existing chats while content is being moved to the updated experience. Could you please confirm whether you were signed in to Copilot with a personal Microsoft account or a work/school account when these conversations were created? You can check the account label shown next to your profile in Copilot.

    If the conversation remains blank everywhere, please contact Microsoft Copilot Support. This forum cannot access backend synchronization data or restore account content. When contacting Support, provide the conversation title, approximate update date, affected platforms, screenshots, any exact error message, and the original chat link privately.

    For a personal Microsoft account, you may also export the available Copilot activity history from the Microsoft Privacy Dashboard before proceeding. 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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