Microsoft plans to end support for Manifest V2 extensions in Edge starting this month, following Google Chrome, and for enterprise users in early 2027 (Stevie Bonifield/The Verge)

Microsoft is discontinuing Manifest V2 extension support in Edge, beginning this month for consumers and extending to enterprise users by early 2027, which will force organizations to migrate critical security and productivity tools like ad blockers and custom extensions to newer standards. This aligns with Google's Chrome transition and signals a fundamental shift in browser extension architecture that IT teams must plan for across their enterprise environments. Organizations should inventory their current extension dependencies and develop migration strategies now to avoid productivity disruptions and security gaps during the transition period.