Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
This policy controls whether browsing history in Microsoft Edge is shared with Microsoft 365 Copilot Search to provide more relevant search results. Only tenant-approved, work-related sites are shared. This feature is available only to users who are signed in to Microsoft Edge with an Entra ID account and have an eligible Microsoft 365 Copilot license. If you enable or don't configure this policy, browsing history will be shared with Microsoft 365 Copilot Search by default, and users can turn off sharing using the toggle in Microsoft Edge settings. If you disable this policy, browsing history won't be shared with Microsoft 365 Copilot Search. Learn more about how Copilot uses data and consent at https://go.microsoft.com/fwlink/?linkid=2333202