Microsoft Advertising announced that it will stop allowing advertisers to set Max CPC (Maximum Cost-Per-Click) limits on new campaigns using several standalone automated bidding strategies starting October 1, 2026. This change is part of the platform's push toward conversion-based targets and other automated bidding controls. Existing campaigns with Max CPC limits will not immediately lose them, and portfolio bid strategies, as well as several other bidding strategies, will retain the option to set Max CPC limits.