Copilot refresh removed all pre-migration chat history

Greg Pogue 0 Reputation points
2026-09-09T12:37:03.5266667+00:00

After the recent Copilot refresh, all of my Copilot conversations from before the migration disappeared.

Symptoms:

  • The banner states that "Past chats, Copilot Tasks, and Copilot Health are coming soon."
  • Clicking "Access chats and tasks" briefly loads the previous Copilot experience, which recognizes my account, but then automatically redirects to the new Copilot.
  • After the redirect, only chats created since the refresh are visible.
  • No pre-refresh chats are visible.
  • The issue occurs in the Windows app, web browser, and mobile experience.
  • I have verified that I am signed in with the correct Microsoft account.
  • The oldest visible conversation is from the day of the refresh.

Please investigate whether my historical chat data is still associated with my account and whether the migration/synchronization process failed.

Microsoft Copilot | Windows Copilot | App
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  1. Haytham-C 5,630 Reputation points Microsoft External Staff Moderator
    2026-09-09T20:39:49.3333333+00:00

    Hello, Anika Neureiter

    Thank you very much for your message. I completely understand how frustrating it is when the chat history – which contains important work content – is no longer accessible after an update; This is certainly very worrying. Since you've already taken some troubleshooting steps, could you please try the following next?

    1. Repair/Reset App:
    • Open Windows Settings (Windows + I) > Apps > Installed apps > Search for "Microsoft 365 Copilot" > Click on the three dots > Advanced options > Repair. If you still don't see your history, click Reset (If you're using a Windows device)
    1. Update License:

    I also noticed that other users also report this problem. However, as the moderator of this forum, I have neither access nor permission to the Copilot backend; therefore, I can't view, edit, or restore chat histories for other users. If the steps I mentioned don't help, I recommend that you contact Microsoft Support:

    • Go to Contact Us - Microsoft Support.
    • Select Copilot.
    • Click Home Support.
    • Enter a brief description of your problem in the search box.
    • Click Get Help and select Contact Support below.
    • Go to the Products and Services tab and select the appropriate product.
    • On the Category tab, select the appropriate category or an alternate option.
    • Go to "Confirm." Look for the "Chat with a support agent in the web browser" option (during business hours) and select it if available. Explain your situation in an understandable way.

    I hope this helps.

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