What are cookies?

Cookies are text files containing small amounts of information, often including a unique identifier, which are downloaded to your device when you visit a website - if your browser preferences allow it. Cookies are then accessed by the originating website on each subsequent visit. Cookies are useful because they allow a website to recognise a user’s device.

Cookie name Description Lifetime
__RequestVerificationToken Used by the antiforgery system. Session
_clck Connects multiple page views by a user into a single Clarity session recording. 1 year
_clsk Persists the Clarity User ID and preferences, unique to that site is attributed to the same user ID. 1 day
.AspNet.ApplicationCookie Used to identify user sessions. A user session starts when a user browses website for the first time. And ends when the session is closed. Configure authentication can be used to change session expiry time span. Session
adxPreviewUnpublishedEntities Stores preview ON/OFF mode used in classic CMS system for website administrators. Session
adx-notification Used in basic form actions to store alert message to be shown on redirection. Session
ANONCHK Indicates whether MUID is transferred to ANID, a cookie used for advertising. Clarity doesn't use ANID and so this is always set to 0. Session
ARRAffinity Added automatically by Azure websites and ensures that requests are load balanced between different sites. Doesn't store any of user information. Session
ASP.NET_SessionId Used to maintain the session of a logged in user to avoid repeated sign-in. Session
CLID Identifies the first-time Clarity saw this user on any site using Clarity. 1 year
ContextLanguageCode Stores the default language of the user accessing website within a session and across webpages. The cookie is deleted after session closes. Session
Dynamics365PortalAnalytics Critical service cookie to analyze service usage anonymously and aggregated for statistical purpose. 90 days
isDSTObserved Stores a value to indicate if the current moment is in daylight saving time. Session
isDSTSupport Indicates whether a specified date and time falls in the range of daylight saving time. Session
MR Indicates whether to refresh MUID. Session
MUID Identifies unique web browsers visiting Microsoft sites. These cookies are used for advertising, site analytics, and other operational purposes. 1 year
SM Used in synchronizing the MUID across Microsoft domains. Session
timeZoneCode Stores the timezonecode field value of CRM timezonedefinition table for the current timezone. Session
timezoneoffset Stores the timezone difference between UTC and Local browser time. Session