Microsoft is rolling out a Copilot personalization update for eligible Microsoft 365 business and education accounts, Forbes reported on October 27. Copilot Memory now uses 'work insights' — details it infers from your Outlook emails, Teams chat records and meeting transcripts — to personalize its responses around your preferences, relationships and work priorities.

Microsoft says the data stays confidential and is not used to train its models. Users stay in control in three ways: ask Copilot 'What do you know about me?' for a summary of what it uses, ask it to forget a specific detail, or turn the whole thing off under Settings > Chat Settings > Personalization by disabling 'Chat History and Work Insights'. Once disabled, the inferred memories are deleted after 30 days — and may be restored if the setting is switched back on inside that window.

The feature is Microsoft 365 Roadmap item 551195, scheduled for early to late October 2026, and the Forbes report indicates the rollout is now reaching tenants. It lands in the same month as fresh outside audits of exactly this kind of inference, which found Copilot's self-reported memory list may be incomplete and that individual wrong or unwanted insights cannot always be removed one by one — making the all-or-nothing toggle the practical control.