DocumentationExperience Cloud interface and administration

Adobe Experience Platform Web SDK cookies

CREATED FOR:

  • Experienced
  • Admin

The Adobe Experience Platform Web SDK uses cookies to store values specific to your implementation.

Name
Max age
Size
Description
AMCV_###@AdobeOrg
34128000 (395 days)
100-120 bytes (variable)
Present when idMigrationEnabled is enabled. It helps when transitioning to the Web SDK while some parts of the site still use visitor.js. The Web SDK both reads and writes to this cookie during migration.
demdex
15552000 (180 days)
varies
Present if Audience Manager ID synchronization is enabled. Audience Manager sets this cookie to assign a unique ID and support ID sync, segmentation, modeling, and reporting. See demdex in Audience Manager cookies.
kndctr_<orgId>_identity
34128000 (395 days)
100-120 bytes (variable)
Stores the ECID and other related information for that device.
kndctr_<orgId>_cluster
1800 (30 minutes)
3-5 bytes
Stores the Edge Network region (location hint) that serves the current user’s requests. The region is used in the URL path so that the Edge Network can route the request to the correct region. If a user connects with a different IP address within the cookie lifetime, the request is again routed to the closest region.
kndctr_<orgId>_consent
15552000 (180 days)
10-11 bytes
Stores the visitor’s consent preferences. Always set regardless of consent because it stores the consent preferences itself.
kndctr_<orgId>_consent_check
7200 (2 hours)
Session-scoped helper that signals the Edge Network to re-check consent server-side after the TTL expires. It enforces a TTL on cached consent.
kndctr_<orgId>_personalization
34128000 (395 days)
Stores session information that Adobe Target uses to personalize content.
mbox
63072000 (2 years)
Present when targetMigrationEnabled is enabled. It allows the Target mbox cookie to be set by the Web SDK.
mboxEdgeCluster
1800 (30 minutes)
Present when targetMigrationEnabled is enabled. It allows the Web SDK to communicate the correct edge cluster to at.js so that Target profiles can stay in sync as users navigate across a site.
s_ecid
63115200 (2 years)
~45 bytes
Contains a copy of the Experience Cloud ID (ECID/MID) in the format s_ecid=MCMID|<ECID>. Acts as a first-party backup of the ECID, primarily for CNAME (first-party) scenarios.

The Edge Network sets all cookies with the secure and sameSite="none" attributes. If you currently have both secure and non-secure sections on your website, user identification can be inaccurate. When a user navigates from a secure section of the site to a non-secure section, the Edge Network generates a new ECID with the request.

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