How to Delete Copilot Chat History: Step-by-Step Privacy Guide

To delete Microsoft Copilot chat history, open Copilot, hover over a conversation in the sidebar, select the three-dot (More) menu and choose Delete. To clear everything at once, sign in at account.microsoft.com/privacy, open your Copilot activity history and select Delete all activity history. Deleting chats does not remove Copilot’s saved memory, so clear that separately.

What Copilot Saves About You

• Conversation history: your past chats, shown in the Copilot sidebar.
• Memory: details Copilot remembers to personalise answers, such as your interests or preferences.
• Activity history: a record linked to your Microsoft account that you can export or delete from the privacy dashboard.

Each of these is controlled in a different place, so you may need more than one step to fully clean up your data.

How to Delete a Single Copilot Conversation

1. Open Copilot on the web, Windows, macOS or the mobile app and sign in.
2. Open the sidebar or menu to see your conversations.
3. Hover over the chat you want to remove (or long-press it on mobile).
4. Select the three-dot (More) menu and choose Delete.
5. Confirm when asked.

Menu positions can change slightly between app versions, but the delete option is always next to each conversation.

How to Delete All Copilot Activity History

For a personal Microsoft account, use the Microsoft privacy dashboard:

1. Go to account.microsoft.com/privacy and sign in.
2. Select Privacy > Empower your productivity > Copilot > Your Copilot app activity history.
3. Choose Copilot apps.
4. Select Delete all activity history, then select Clear to confirm.

If you want a copy first, choose Export all activity history. This downloads a CSV file you can open to review your chats.

Copilot in Microsoft 365 Apps

On the same page, select Copilot in Microsoft 365 apps to export or delete activity from Word, Excel, PowerPoint, Outlook, OneNote and Teams. Work or school accounts are managed by your organisation and may follow different rules.

How to Turn Off or Clear Copilot Memory

1. Select your profile icon in Copilot.
2. Go to Memory > Personalization and memory and turn it off to stop Copilot remembering new details.
3. To remove what it already knows, select Memory > Delete all Memory.

Turning memory off does not delete past conversations, and deleting conversations does not clear memory. Do both if you want a fresh start.

Stop Copilot Training on Your Chats

1. Select your profile icon, then your profile name (or Settings on Windows and macOS).
2. Open Privacy.
3. Turn off Training on conversation activity and Training on voice conversations.

Microsoft notes that data may still be used for safety, security and legal compliance.

Extra Privacy Tips

• Avoid sharing passwords, bank details or ID numbers in any AI chat.
• If you do not use Copilot in Edge, you can also remove Copilot from Microsoft Edge.
• Keep your Microsoft account secure; if you lose access, see how to reset a Microsoft account password.
• Comparing assistants? Read our list of ChatGPT alternatives.

Frequently Asked Questions

Does deleting a Copilot chat delete it permanently?

It removes the conversation from your history. To clear all linked activity from your Microsoft account, also use Delete all activity history in the privacy dashboard.

Does deleting chat history clear Copilot memory?

No. Memory is separate. Go to Memory and select Delete all Memory to remove saved details.

Can I see my Copilot history before deleting it?

Yes. In the privacy dashboard, choose Export all activity history to download a CSV copy of your Copilot activity.

Final Takeaway

Delete single Copilot chats from the sidebar, clear everything from the Microsoft privacy dashboard, and remember to wipe memory separately. Turning off model training gives you even more control over your data.