Still Running Version 1.8.2 - What are the Limitations? | Community

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Still Running Version 1.8.2 - What are the Limitations?

Forum|Forum|6 months ago
October 8, 2025
1 reply
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Hi, Community!

We are still running the at.js 1.8.2 version, and I am attempting to make a strong business case for why we should upgrade to the latest version and highlight what we are missing from an A/B testing and personalization perspective if we don't. Anyone else have experience with this or any advice?

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Best answer by SalilChaudhary

End of Support for at.js 1.x

Critical Timeline: Adobe will not provide security updates or bug fixes for at.js 1.x (including 1.8.2). https://experienceleague.adobe.com/en/docs/target-dev/developer/client-side/at-js-implementation/target-atjs-versions#:~:text=at.js%201.x%20has,version%20of%20the%20corresponding%20major%20version.
Impact: Staying on 1.x means risking security vulnerabilities and missing out on compatibility with new browsers/standards

Accepted solution

Adobe Employee

End of Support for at.js 1.x

Critical Timeline: Adobe will not provide security updates or bug fixes for at.js 1.x (including 1.8.2). https://experienceleague.adobe.com/en/docs/target-dev/developer/client-side/at-js-implementation/target-atjs-versions#:~:text=at.js%201.x%20has,version%20of%20the%20corresponding%20major%20version.
Impact: Staying on 1.x means risking security vulnerabilities and missing out on compatibility with new browsers/standards

Thank you, @salilchaudhary! Is there a timeline for when Adobe will completely end support for at.js 1.x and necessitate the update?