Google Ads June 15, 2026 Changes: Offline Conversions Cutoff, Consent Mode and Performance Max Updates

Question 1

What happens to offline conversion imports after the June 15, 2026 API cutoff?

Accepted Answer

According to groas, the Google Ads API will stop accepting new adopters of the UploadClickConversions method on June 15, 2026, and the API will return an error if the account or integration has not called this method at least once between December 2025 and May 2026. The article states that enhanced conversions for leads fall under the same restriction and that the required migration path is the Data Manager API. The article adds that if the attribution pipeline breaks, Smart Bidding loses the signal it needs to optimize.

Question 2

How does Consent Mode change on June 15, 2026?

Accepted Answer

The article states that on June 15 the ad_storage parameter in Consent Mode becomes the single gate controlling all advertising data flowing from GA4 to Google Ads, and the Google Signals toggle inside GA4 will no longer have any influence over what data reaches Google Ads. According to groas, misconfigured consent banners or incorrect ad_storage settings for granted and denied states can silently degrade Google Ads reporting, audience building, and ROAS measurement without an error. The article recommends that any account using Consent Mode audit and validate its implementation before June 15, noting heightened risk for EU advertisers operating under GDPR.

Question 3

What is new with Performance Max asset experiments?

Accepted Answer

According to groas, Google Ads now supports structured asset experiments in Performance Max campaigns as updated on June 10, 2026, allowing advertisers to A/B test headlines, images, and videos through the Experiments tab. The article states an upcoming expansion will bring experiment management to the Google Ads API and MCC level for running and monitoring tests across multiple client accounts. The article recommends starting with headline variants if asset groups have enough volume, since those tend to produce statistically significant results fastest.

Question 4

When are Dynamic Search Ads upgrading to AI Max and how should advertisers prepare?

Accepted Answer

The article states that legacy Dynamic Search Ads campaigns will be automatically upgraded to AI Max for Search beginning in September 2026, after AI Max reached general availability earlier this year. According to groas, AI Max uses Google's AI to broaden keyword matching, generate ad copy, and adjust landing page targeting dynamically, with advertiser controls including brand exclusions and URL restrictions. The article recommends running parallel campaigns through the summer to understand query coverage, CPCs, and conversion rates before Google makes the switch.

Question 5

What changed with automatic YouTube channel linking on June 10, 2026?

Accepted Answer

According to groas, Google activated automatic YouTube channel-to-Google Ads account linking on June 10, 2026, for eligible accounts that did not opt out during the 30-day notification window. The article states that once linked, advertisers gain access to audience segments built from YouTube engagement data and organic video metrics directly inside Google Ads. The article recommends agencies managing MCC accounts audit link status across all client accounts and review any new audience segments that appeared.

Question 6

What other Performance Max reporting, data retention, and Demand Gen changes apply in June 2026?

Accepted Answer

The article states that on June 15 the Google Ads API will begin surfacing Performance Max product reporting data from all networks, not just Shopping, so dashboards or scripts pulling that data should be checked before the weekend. According to groas, as of June 2026 hourly, daily, and weekly reporting data older than 37 months is no longer accessible, with only monthly and longer aggregations retaining multi-year availability. The article also notes a June 10 Demand Gen and DV360 Structured Data File update adding Target CPC bidding and New Customer Only Mode in Demand Gen.