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Change historychevron_rightMicrosoft Adschevron_rightMar 19, 2025

Consent signals required for EEA, UK and Swiss traffic from May 5, 2025

Date
Mar 19, 2025
Effective
May 5, 2025
Regions
EEA, UK, Switzerland
Primary source
Microsoft Advertising Blog

Microsoft began enforcing explicit user consent signals via UET Consent Mode, IAB TCF 2.0 or tag-manager integrations for site visits from the EEA, UK and Switzerland. Advertisers not passing signals by May 5, 2025 would see degraded measurement and performance in those regions.

Search Engine Land first reported the enforcement on March 19, 2025; Microsoft published the deadline post on March 31, 2025.

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