In this article

01 The replacement changes the information your site sends

02 Check the bid path through to the ad server

03 The recommended version includes a consent fix

Microsoft warns publishers using the old AppNexus ad connection to replace it before an early-2027 shutdown. The company says the adapter will be removed from Prebid.js and its legacy endpoint retired, ending that route for requesting advertising bids.

The warning appears in Microsoft’s October 21 Monetize update . Publishers are directed to the Microsoft Prebid Adapter, which connects their available ad placements to Microsoft’s advertising exchange. The notice does not give an exact shutdown day.

The replacement changes the information your site sends

Prebid is software publishers use to request bids for their ad space.…