Missing months of Copilot chats. History empty. Need recovery

If this occurred while a personal Copilot account was moving to the updated app, check the previous Copilot experience first, then export the account’s activity history if the conversation still does not appear.

1. Check whether the conversation remains in the previous experience

Because other chats returned after the syncing issue, this migration-specific check is more useful than repeating ordinary synchronization troubleshooting:

1. Open a new InPrivate/private browsing window.
2. Go to copilot.microsoft.com.
3. Sign in using the exact account and sign-in method originally used:
   • Microsoft account, or
   • Continue with Google, or
   • Continue with Apple.
4. If you remain at the previous Copilot experience, open the chat history and look for the missing thread there.
5. If found, save the content immediately into a document. Do not create a public sharing link because the conversation contains sensitive family and legal information.
6. If redirected to copilot.com, the account has moved or is completing its move. Fully quit and reopen Copilot—or refresh the page—and use any in-app link offering access to existing chats. Microsoft notes that large amounts of content can take time to finish moving.^1^

Also open the left sidebar and search the Chats list. Signed-in personal Copilot accounts retain the last 18 months of interactions, so a conversation older than that may no longer appear.^2^

2. Export the activity history

If the thread remains absent, the export may recover its prompts and responses even when it is no longer visible in the Chats list:

1. Sign in to the Microsoft privacy dashboard with the same personal Microsoft account.
2. Open Privacy → Empower your productivity → Copilot → Your Copilot app activity history.
3. Check both relevant sections:
   • Copilot apps
   • Copilot in Microsoft 365 apps, if that is where the chat occurred
4. Select Export all activity history or Export all Copilot Chat activity history.
5. Download and search the resulting CSV for distinctive phrases from the custody or child-support discussion.^3^

An export can recover readable conversation content, but Microsoft does not document a way to import that CSV and restore it as a resumable thread. Do not select “Delete all activity history.”

3. Report the missing conversation

If it is absent from both the old experience and the export:

1. In Copilot, select … in the upper-right corner.
2. Select Send feedback → Report a problem.
3. Include:
   • Approximate date range and last date the chat was visible
   • Device, operating system, and Copilot app/web client
   • Whether other chats returned but this specific one did not
   • The sign-in type used
   • A screenshot of the empty or incomplete history

Do not include custody details, children’s names, court documents, addresses, or other confidential information in the report. Microsoft documents this reporting path for unresolved updated-app content problems.^1^

There is no documented self-service command to restore one missing personal Copilot conversation. If it was manually deleted—or the account’s entire activity history was cleared—it may not be recoverable through the user interface.^4^

If this was a work or school account

Ask the Microsoft 365 administrator to:

1. Check Health → Service health for a relevant Copilot advisory.
2. Open a service request through Help & Support in the Microsoft 365 admin center.
3. If organizational retention or legal hold applies, have an authorized compliance administrator search Copilot interaction data through Microsoft Purview Content Search or eDiscovery. Microsoft stores work-account prompts and responses as Copilot activity history, and administrators can search retained interaction data.^5^

Purview applies only to organizational accounts and requires the appropriate administrative permissions and retained data; it is not a personal-account recovery option.

References

1. Troubleshoot Your Content in the Updated Copilot App | Microsoft Support
2. Conversation history in Microsoft Copilot | Microsoft Support
3. Manage your Copilot activity history in the privacy dashboard | Microsoft Support
4. losing my long time copilot - Microsoft Q&A
5. Data, Privacy, and Security for Microsoft Copilot