---
title: Reference - Kentico cookies
---
> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).
The following table describes the cookies used in Kentico and lists the [level](https://docs.kentico.com/k11/configuring-kentico/adding-cookie-law-consent-to-web-pages/cookie-levels.md) of each cookie:
| Cookie name | Level | Expiration | Description |
| ----------------------------------- | ------------- | ----------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| CMSCookieLevel | **System** | 1 year | Specifies which cookies are allowed by the visitor. |
| ASP.NET\_SessionId | System | session end | Keeps the user session ID for security reasons. |
| CMSCsrfCookie | System | session end | Store's a security token that the system uses to validate all form data submitted via POST requests. Helps protect against [Cross site request forgery](https://docs.kentico.com/k11/securing-websites/developing-secure-websites/cross-site-request-forgery-csrf-xsrf.md). |
| CMSPreferredCulture | **Essential** | 1 year | Stores the visitor's preferred [content culture](https://docs.kentico.com/k11/multilingual-websites.md). |
| CMSMobileRedirected | Essential | session end | Indicates if the visitor has been redirected to the mobile version of the website by the [Mobile device redirection](https://docs.kentico.com/k11/developing-websites/developing-websites-for-mobile-devices/creating-separate-website-sections-for-mobile-devices.md) web part. |
| CMSCurrentTheme | Essential | 1 day | Stores the name of the current visual theme to provide proper design to the dialog windows. |
| Webauthtoken | Essential | 3rd party cookie | Live ID authentication cookie. |
| CMSForumPostAnswer | Essential | 1 month | Keeps a list of Question-Answer [forum](https://docs.kentico.com/k11/community-features/forums.md) posts in which the user voted for an answer to prevent repeated votes. |
| CMSVotedPolls | Essential | 1 year | Keeps a list of [polls](https://docs.kentico.com/k11/managing-website-content/polls.md) where the user voted to prevent repeated votes. |
| CMSRatedDocuments | Essential | 1 year | Keeps a list of pages that the user [rated](https://docs.kentico.com/k11/community-features/content-rating.md) to prevent repeated votes. |
| CMSShowDesktopVersion | Essential | 1 year | Indicates that the visitor has switched to the desktop (default) version of the website from a specific device profile. |
| CMSWindowsUser | Essential | session end | Stores information for users who were imported from an Active Directory domain during authentication. |
| .ASPXFORMSAUTH | Essential | set in web.config | Stores the user's encrypted authentication ticket when using forms authentication. |
| CMSPreferredUICulture | **Editor** | 1 year | Stores the preferred UI culture of the user. |
| CMSViewMode | Editor | 1 day | Stores the user's current view mode (Edit, Preview, Design, etc.). |
| CMSImpersonation | Editor | session end | Stores user information when [impersonating a different user](https://docs.kentico.com/k11/managing-users/user-management/impersonating-a-different-user.md) in the administration interface. |
| CMSUserWords | Editor | 1 month | User's custom word dictionary kept by the spell checker. |
| DisplayContentInDesignMode | Editor | session end | Remembers the user's setting of the _Web part content_ checkbox on the Design tab (for example in the Pages application). |
| DisplayContentInUIElementDesignMode | Editor | session end | Remembers the user's setting of the _Web part content_ check box on the Design tab of [UI elements](https://docs.kentico.com/k11/custom-development/creating-custom-modules/reference-managing-ui-elements.md). |
| CMSMacroDesignerTab | Editor | 1 day | Remembers the last active tab of the [Edit macro condition dialog](https://docs.kentico.com/k11/macro-expressions/writing-macro-conditions/building-conditions-using-macro-rules.md). |
| CMSSplitMode | Editor | session end | Remembers the state of the language version split-view mode when editing multilingual websites. |
| CMSPreviewState | Editor | 1 year | Stores the user's latest [page design preview](https://docs.kentico.com/k11/developing-websites/previewing-design-changes.md) preferences. |
| CMSPropertyTab | Editor | 1 day | Remembers the last active tab of the Properties section in the Pages application. |
| CMSViewTab | Editor | 1 day | Remembers the last active tab of the View section in the Preview mode of the Pages application. |
| CMSValidationTab | Editor | 1 day | Remembers the last active tab of the Validation section in the Preview mode of the Pages application. |
| CMSEdABSelectorState | Editor | 2 months | Stores the state of the selectors on the A/B test overview page. |
| CMSEdVariantSliderPositions | Editor | 7 days | Remembers the position of the variant slider when defining variants for [MVT](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/optimization-testing/multivariate-testing.md) or [Content personalization](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/content-personalization.md). |
| CMSEdNoTestMVT | Editor | 1 month | Stores the currently selected MVT combination for editors in the administration interface. |
| CMSEdCurrent | Editor | 1 day | Stores the current step of [Wizard layout](https://docs.kentico.com/k11/developing-websites/developing-websites-using-the-portal-engine/working-with-layout-web-parts.md) web parts in the administration interface. |
| CMSWebPartToolbarCategory | Editor | 1 month | Stores the selected web part category on the [web part toolbar](https://docs.kentico.com/k11/developing-websites/developing-websites-using-the-portal-engine/using-and-configuring-web-parts.md). |
| CMSWebPartToolbarCategoryUI | Editor | 1 month | Stores the selected web part category in the web part toolbar when editing UI templates. |
| CMSWebPartToolbarMinimized | Editor | 1 month | Remembers if the user minimized the web part toolbar on the Design tab. |
| CMSCurrentDeviceProfileName | Editor | 1 year | Stores the selected [device profile ](https://docs.kentico.com/k11/developing-websites/developing-websites-for-mobile-devices/creating-device-profiles.md)when editing pages. |
| CMSCurrentDeviceProfileRotate | Editor | session end | Remembers whether the device preview uses the landscape or portrait view. |
| CMSUniGraph | Editor | 1 year | Stores the user's _Snap to grid_ preference in the advanced workflow and [marketing automation](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/marketing-automation/working-with-the-automation-process-designer.md) designer. |
| CMSSessionToken | Editor | 1 year | Stores the token used by the web service that provides the advanced workflow and [marketing automation](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/marketing-automation/working-with-the-automation-process-designer.md) designer. |
| VisitorStatus | **Visitor** | 20 years | Indicates if the visitor is new or returning. Used for tracking the _visitors_ statistic in [Web analytics](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/web-analytics.md). |
| Source | Visitor | 50 years | Stores the channel from which the visitor arrived as part of a [campaign](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/campaigns.md) (e.g., email, Facebook, Twitter, etc.). Based on the _utm\_source_ query string parameter. |
| Campaign | Visitor | 50 years | Stores the name of the [campaign](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/campaigns.md) assigned to the visitor. |
| Content | Visitor | 50 years | Stores the specific content item through which the visitor arrived as part of a [campaign](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/campaigns.md). Based on the _utm\_content_ query string parameter. |
| TrackedCampaigns | Visitor | 20 minutes | Stores all the [campaigns](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/campaigns.md), which should be tracked within a JavaScript snippet. |
| UrlReferrer | Visitor | 1 day | Stores the URL referrer from which the user arrives on the website. |
| CurrentContact | Visitor | 50 years | Stores the GUID of the [contact](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/contact-management/working-with-contacts.md) related to the current site visitor. Used to track activities on the website. |
| CMSAB | Visitor | 2 months | Used to track conversions for the test and maintain consistent page content for the visitor. Stores the name of the page variant assigned to the visitor, the list of performed conversions and information whether visitor is included in A/B testing specified by an [A/B test](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/optimization-testing/a-b-testing-website-pages.md). |
| CMSMVT | Visitor | 1 month | Stores the combination of variants assigned to the visitor by an [MVT test](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/optimization-testing/multivariate-testing.md). Used to track conversions for the test and maintain consistent page content for the visitor. |
| CMSShoppingCart | Visitor | 1 year | Stores a GUID reference to the user's shopping cart. Allows the system to recover the shopping cart for unregistered customers, even after it is cleared from the cache (for example after an application restart). |
| CMSBodyClass | Visitor | 50 years | Body element class to provide accessibility standards. |
| CMSUserPage | Visitor | 20 minutes | Stores the IDs (DocumentID, NodeID) of the last visited page. Used for logging landing and exit page [web analytics](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/web-analytics.md) and [activities](https://docs.kentico.com/k11/on-line-marketing-features/managing-your-on-line-marketing-features/contact-management/tracking-contact-activities.md). |
| ChatLoggedInToken | Visitor | session end | Stores the login state for the [Chat](https://docs.kentico.com/k11/community-features/chat.md) application (indicates if the user is in the online state). |
| ChatSupportLoggedInToken | Visitor | session end | Indicates if the user is logged in to the support chat. |
| \_\_roomID | Visitor | 4 days | Stores bindings between [groups of chat web parts](https://docs.kentico.com/k11/community-features/chat/setting-up-chat-on-site/grouping-chat-web-parts.md) and chat rooms (for a specific window or tab). |
| chat\_autoinitchat\_displayed\_ | Visitor | 1 hour | Remembers if the _Automatically initiated chat_ web part was shown to the user (prevents multiple chat initiation messages). |
| chat\_kick\_roomid\_ | Visitor | Kick lasting time (seconds) setting | Indicates that the user was kicked from the specified chat room (and is not allowed to return). |
| StrandsSBS\_\* | Visitor | 20 minutes | Used by the Strands Recommender solely for its own purposes. The cookies are managed on the Strands side. |
| CMSStrandsTrackEvent\_\* | Visitor | 20 minutes | Stores persistent HTTP context after a page is reloaded. Used for tracking of shopping cart events. |
| \_\_openid\_selector\_\* | Visitor | 1 year | Stores OpenId user identification for authentication purposes. |
| CMSLandingPageLoaded | Visitor | 20 minutes | Indicates that the landing page has already been visited and the _Landing page_ activity is not logged again for the current visitor. Expires after 20 minutes and the expiration period of the key is renewed every time the website is accessed again. |
## Third party cookies
| Third party | Cookie level | Notes |
| ----------- | ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| YouTube | All (by default) | The **YouTube video** web part and widget use corresponding YouTube cookies.
If your site has its default [cookie level](https://docs.kentico.com/k11/configuring-kentico/adding-cookie-law-consent-to-web-pages/cookie-levels.md) configured to a lower value than _All_ (1000), YouTube videos will not be displayed for visitors until they increase their allowed cookie level. To enable YouTube videos for lower cookie levels, set a corresponding cookie level value using the _CMSSocialMediaCookieLevel_ web.config key:
`
` |
| CKEditor | - | CKEditor cookies may be stored for users working with the [WYSIWYG editor](https://docs.kentico.com/k11/managing-website-content/working-with-pages/editing-pages/using-the-editor.md). |
Related pages
- [Adding cookie law consent to web pages](https://docs.kentico.com/k11/configuring-kentico/adding-cookie-law-consent-to-web-pages.md)
- [Cookie levels](https://docs.kentico.com/k11/configuring-kentico/adding-cookie-law-consent-to-web-pages/cookie-levels.md)