How to Turn Off Copilot Chat History Personalization

Microsoft's support documentation confirms that disabling Copilot's personalization and memory settings makes the assistant "forget its memories of your conversations," which stops future responses from being shaped by anything you've said before (Microsoft Support). That's the short answer for anyone searching how to turn off Copilot chat history personalization: flip the setting, and Copilot stops drawing on past chats to personalize what it tells you next.

A June 2024 ElevenForum guide documents this setting across Copilot on the web, the Edge sidebar, and the Windows 11 Copilot app, all tied to a signed-in personal Microsoft account. That same account is what unlocks chat history, memory, and personalization features in Copilot to begin with, according to the guide. What follows covers where to find the toggle, what it actually changes, and where Microsoft's own documentation stops short, including what happens to memories Copilot has already built from your conversations.

What the Chat history toggle does and does not do

Copilot relies on two related but separate things. One is the chat transcript itself, the conversations you can scroll back through and reopen. The other is Copilot Memory, which "automatically collects key details from your previous chat conversations and remembers it for future conversations," per the ElevenForum guide. The Chat history toggle governs that second piece: whether Copilot is allowed to reuse what it has learned from you.

Microsoft's support page backs this up directly: turning off personalization and memory means "Copilot will forget its memories of your conversations," so future responses stop drawing on prior ones (Microsoft Support). The same page adds a detail that matters for the rest of this guide: you can still view your past conversations after switching the toggle off. That does not delete the visible chat history. The setting changes whether Copilot uses past conversations for personalization, not whether that history is still sitting in your account.

Microsoft's transparency documentation makes a related point separately: cards in Copilot can be personalized based on chat history over time, and users can opt out of that personalization in settings whenever they choose (Transparency Note). That's the same mechanism the Chat history toggle is built to stop, confirmed in a second Microsoft document.

How to turn off Copilot chat history personalization

Before starting, confirm two things: you're using a personal Microsoft account rather than a work or school one, and you're signed in on whichever surface you plan to use, web, Edge, or the Windows 11 app. The ElevenForum guide ties the personalization features, including chat history, to that signed-in personal account, so skipping this step means the menu below won't appear.

The June 2024 ElevenForum guide documents matching menus for this setting across Copilot on the web, Edge, and Windows 11. Because the walkthrough is from June 2024, the current menu labels may differ. If what you see doesn't match what's described here, don't assume the setting is still available or in the same location; check Microsoft's current instructions or your account controls directly.

1. Sign in to Copilot with a personal Microsoft account, whether on the web, in the Edge sidebar, or in the Windows 11 Copilot app. The documented procedure is for a signed-in personal Microsoft account; that sign-in is what gives access to chat history and related personalization features.
2. Open Copilot's chat settings and select Personalization from the left-side menu. This is where the ElevenForum guide places the control across all three surfaces. You'll land on a screen listing several personalization toggles, including the one covered here.
3. Find the Chat history toggle inside Personalization. It's on by default once you're signed in, according to that guide, usually grouped near other personalization controls like Saved memories if your account has them.
4. Switch the toggle off. It should shift visibly to its off state right away. Microsoft says this stops Copilot from using past chats to personalize future responses (Microsoft Support).
5. Confirm the toggle still shows as off after navigating away and back. Treat that settings state as your confirmation; Microsoft's documentation doesn't describe a way to test the change by starting a fresh conversation, so don't rely on a new chat's behavior to verify it.

What to check if the Chat history setting is missing

Sign-in state isn't always obvious. You might be signed into Windows 11 with a personal Microsoft account but browsing Copilot on the web in a different, signed-out browser profile, or using Edge's sidebar where sign-in doesn't always carry over automatically. Check the account icon inside Copilot itself on whichever surface you're troubleshooting, rather than assuming your Windows sign-in state applies everywhere.

If you're signed in with a personal account and the toggle still isn't there, the menu may have shifted since the June 2024 documentation was written. Check Microsoft's current support instructions rather than guessing at a new label.

If you're on a work or school account, stop here. The Saved memories controls covered next are documented for Microsoft 365 Copilot, and the supplied documentation doesn't confirm that those controls map onto personal Copilot accounts.

Chat history vs. Copilot Memory settings

If your account shows a Saved memories control instead of, or alongside, Chat history, that's a separate feature documented for Microsoft 365 Copilot. The memory support page itself is written for Microsoft 365 Copilot, which is typically provisioned through work or school accounts rather than the personal consumer Copilot experience most readers of this guide are using. Saved memories is on by default, and you turn it off by moving its toggle to the Off position (Microsoft 365 Copilot memory page).

Microsoft says turning off Saved memories does not automatically delete already saved memories. Removing existing entries means deleting them one at a time or using the Delete all memories option in the same settings area (Microsoft 365 Copilot memory page).

The relationship between the two settings only runs one direction. The ElevenForum guide notes that turning off Saved memories also disables Chat history personalization as a side effect. Nothing in Microsoft's documentation confirms the reverse, so don't assume switching off Chat history also clears Saved memories or anything from your visible transcripts.

A third-party claim worth flagging separately: the June 2024 ElevenForum guide states that once Chat history is off, inferences Copilot made from earlier chats get deleted after 30 days, and that re-enabling the toggle within that window restores them. Microsoft's current support page describes re-enabling differently, saying Copilot will "begin remembering new details" going forward, with no mention of a 30-day cycle (Microsoft Support). The 30-day figure comes from a third-party guide, not Microsoft's own documentation, so don't plan around it as a guarantee.

Ads and AI training: controls outside this toggle

Microsoft states directly that the personalization setting governing Chat history "does not control whether you receive personalized ads" (Microsoft Support). That preference lives elsewhere in a Microsoft account, and switching off Chat history has no bearing on it.

AI training opt-outs are a separate, older commitment. In an August 2024 Microsoft blog post, Microsoft said it would begin providing opt-out controls for AI training the following month, with notices displayed inside Copilot, Bing, and Microsoft Start, and that it would not train on consumer data until at least 15 days after notifying users those controls were available. Microsoft framed the shift as a trust commitment at the time, stating it would "always ask first" and "always put you in control" of how data gets used for training (Microsoft blog post). That commitment is now more than two years old, and nothing in the available documentation confirms what the control is currently called, where it sits in account settings, or whether every consumer account can see it.

Treat chat-history personalization, Saved memories, personalized ads, and AI-training controls as separate privacy questions. The available documentation doesn't establish that they share one menu or behave identically, so check each setting on its own rather than assuming one toggle covers all of them.

Managing Copilot chat history going forward

For most readers trying to manage Copilot chat history in Windows 11, Edge, or on the web, the fix is the Chat history toggle under Personalization settings, and Microsoft confirms that switching it off stops past conversations from shaping future responses. If a Saved memories control also shows up on your account, treat it separately and delete entries manually if you want them gone, since turning it off alone won't clear what's already stored. Check the ad-preference settings in your Microsoft account if personalized ads are the actual concern, since this toggle doesn't touch those, and don't bank on the 30-day deletion or restoration window, since that detail comes from a third-party guide rather than Microsoft's own support pages.