Privacy policy: https://account.microsoft.com/privacy
| Cookie | Category | Purpose |
|---|---|---|
AADNonce.forms | Functional | Unique identifier of one authentication session to prevent replay. |
AADSSO | Functional | Microsoft Microsoft Online Authentication Cookie |
ACH01 | Marketing | Maintains information about which ad and where the user clicked on the ad. |
ACL | Marketing | This cookie is used for advertisement tracking purposes. |
ACLUSR | Marketing | This cookie is used for advertisement tracking purposes. |
ai_session | Functional | This is a unique anonymous session identifier cookie. |
ai_user | Functional | This is a unique user identifier cookie enabling counting of the number of users accessing the application over time. |
ANON | Marketing | Contains the A, a unique identifier derived from your Microsoft account, which is used for advertising, personalization, and operational purposes. It is also used to preserve your choice to opt out of interest-based advertising from Microsoft if you have chosen to associate the opt-out with your Microsoft account. |
ANONCHK | Marketing | Used to store session ID for a users session to ensure that clicks from adverts on the Bing search engine are verified for reporting purposes and for personalisation |
__AntiXsrfToken | Strictly necessary | This cookie is used to prevent Cross-site request forgery (often abbreviated as CSRF) attacks of the website. CSRF attacks exploit the trust that a site has in a user's browser. |
ApplicationGatewayAffinity | Functional | This cookie is used by Azure Apps to keep a user session on the same server. |
ApplicationGatewayAffinityCORS | Functional | This cookie is used by Azure Apps to keep a user session on the same server. |
ARRAffinity | Functional | When using Microsoft Azure as a hosting platform and enabling load balancing, this cookie ensures that requests from one visitor's browsing session are always handled by the same server in the cluster. |
ARRAffinitySameSite | Functional | When using Microsoft Azure as a hosting platform and enabling load balancing, this cookie ensures that requests from one visitor's browsing session are always handled by the same server in the cluster. |
ASLBSA | Functional | Microsoft App Service and Front Door Affinity Cookies. These cookies are used to direct your browser to use the appropriate backend server. |
ASLBSACORS | Functional | Microsoft App Service and Front Door Affinity Cookies. These cookies are used to direct your browser to use the appropriate backend server. |
ASP.NET_Sessio | Functional | General purpose platform session cookie, used by sites written with Microsoft .NET based technologies. Usually used to maintain an anonymised user session by the server. |
ASP.NET_Sessio_Fallback | Functional | Fallback session cookie to support older browsers that haven't implemented the Secure flag, in modern evergreen browsers this cookie is never set as it haven't got the Secure flag. |
ASP.NET_SessionId | Functional | ASP.Net_SessionId is a cookie which is used to identify the users session on the server. The session being an area on the server which can be used to store session state in between http requests. |
.AspNetCore.Antiforgery. | Strictly necessary | Anti-forgery cookie is a security mechanism to defend against cross-site request forgery (CSRF) attacks. |
.AspNetCore.Mvc.CookieTempDataProvider | Functional | This cookie is used to keep temporary session data while you are on the site. |
ASPSESSIO | Functional | Browsing session: the asterisks identify an alphanumerical code that varies from session to session in automatic mode. |
.ASPXANONYMOUS | Functional | Created by ASP.Net. This cookie configures anonymous identification for application authorization. This is required to identify entities that are not authenticated when authorization is required. |
.ASPXAUTH | Functional | Created by ASP.Net. .ASPXAUTH is a cookie to identify if the user is authenticated( As user's identity has been verified) |
BCP | Marketing | This cookie is used for advertisement tracking purposes. |
BFB | Marketing | This cookie is used for advertisement tracking purposes. |
BFBUSR | Marketing | This cookie is used for advertisement tracking purposes. |
brcap | Functional | Microsoft Microsoft Online Authentication Cookie |
buid | Functional | This cookie is used by Microsoft to securely verify your login information |
CC | Marketing | Contains a country code as determined from your IP address. |
childinfo | Marketing | Contains information that Microsoft account uses within its pages in relation to child accounts. |
_clck | Analytics | This cookie is installed by Microsoft Clarity to store information of how visitors use a website and help in creating an analytics report of how the website is doing. The data collected including the number visitors, the source where they have come from, and the pages visited in an anonymous form. |
CLID | Analytics | The cookie is set by embedded Microsoft Clarity scripts. The purpose of this cookie is for heatmap and session recording. |
_clsk | Analytics | This cookie is installed by Microsoft Clarity to store information of how visitors use a website and help in creating an analytics report of how the website is doing. The data collected including the number visitors, the source where they have come from, and the pages visited in an anonymous form. |
DcLcid | Functional | Saves language preference. |
Dynamics365PortalAnalytics | Functional | Used to uniquely distinguish one site visitor from another without storing any personal data or user identity. This cookie is essential for delivering reliable, secure, and maintainable service functionality across multiple Power Pages features. |
esctx | Functional | This cookie is used by Microsoft to securely verify your login information |
esctx- | Functional | This cookie is set by Microsoft for secure authentication of the users' login details |
fpc | Functional | This cookie is used by Microsoft to securely verify your login information |
_HPVN | Marketing | Analysis service that connects data from the Bing advertising network with actions performed on the website. |
isFirstSession | Functional | This cookie is used when user opts-in to saving information |
kcdob | Marketing | Contains information that Microsoft account uses within its pages in relation to child accounts. |
kcrelid | Marketing | Contains information that Microsoft account uses within its pages in relation to child accounts. |
kcru | Marketing | Contains information that Microsoft account uses within its pages in relation to child accounts. |
KievRPSAuth | Functional | Helps to authenticate you when you sign in with your Microsoft account. |
MC0 | Functional | Detects whether cookies are enabled in the browser. |
MC1 | Marketing | Identifies unique web browsers visiting Microsoft sites. These cookies are used for advertising, site analytics, and other operational purposes. |
MH | Marketing | Appears on co-branded sites where Microsoft is partnering with an advertiser. This cookie identifies the advertiser, so the right ad is selected. |
MicrosoftApplicationsTelemetryDeviceId | Analytics | Used to store a unique device ID for tracking behavior and usage of the website |
MR | Marketing | Used to collect information for analytics purposes. |
MS0 | Functional | Identifies a specific session. |
MSFPC | Marketing | Identifies unique web browsers visiting Microsoft sites. These cookies are used for advertising, site analytics, and other operational purposes. |
MSNRPSAuth | Functional | Helps to authenticate you when you sign in with your Microsoft account. |
MSO | Functional | This cookie identifies a session |
MSPAuth | Functional | Helps to authenticate you when you sign in with your Microsoft account. |
MSPProf | Functional | Helps to authenticate you when you sign in with your Microsoft account. |
MSPTC | Marketing | This cookie registers data on the visitor. The information is used to optimize advertisement relevance. |
MUID | Marketing | Identifies unique web browsers visiting Microsoft sites. These cookies are used for advertising, site analytics, and other operational purposes. |
MUIDB | Marketing | Identifies unique web browsers visiting Microsoft sites. These cookies are used for advertising, site analytics, and other operational purposes. |
NAP | Marketing | Contains an encrypted version of your country, postal code, age, gender, language and occupation, if known, based on your Microsoft account profile. |
nSGt- | Functional | This cookie is used by Microsoft to securely verify your Sharepoint login information |
OID | Marketing | This cookie is used by the Bing advertising network for advertising tracking purposes. |
OIDI | Marketing | This cookie is used by the Bing advertising network for advertising tracking purposes. |
OIDR | Marketing | This cookie is used by the Bing advertising network for advertising tracking purposes. |
pcfm | Marketing | Contains information that Microsoft account uses within its pages in relation to child accounts. |
PPAuth | Functional | Helps to authenticate you when you sign in with your Microsoft account. |
__RequestVerificationToken | Functional | This is an anti-forgery cookie set by web applications built using ASP.NET MVC technologies. It is designed to stop unauthorised posting of content to a website, known as Cross-Site Request Forgery. |
RpsContextCookie | Functional | This cookie is used by Microsoft to securely verify your Sharepoint login information |
_RwBf | Marketing | This cookie helps us to track the effectiveness of advertising campaigns on the Bing advertising network. |
SM | Analytics | This is a Microsoft cookie which we use to measure the use of the website for internal analytics |
SRM_B | Functional | Collected user data is specifically adapted to the user or device. The usercan also be followed outside of the loaded website, creating a picture of the visitor's behavior. |
stsservicecookie | Functional | Cookie for Azure Active Directory B2C-verification |
ToptOut | Marketing | Records your decision not to receive interest-based advertising delivered by Microsoft. |
_u | Marketing | Tracks interaction on a website after having clicked on a Bing ad |
_uetsid | Marketing | This cookie is used by Bing to determine what ads should be shown that may be relevant to the end user perusing the site. |
_uetvid | Marketing | This is a cookie utilised by Microsoft Bing Ads and is a tracking cookie. It allows us to engage with a user that has previously visited our website. |
_UR | Marketing | This cookie is used by the Bing advertising network for advertising tracking purposes. |
VisitorStorageGuid | Functional | This cookie is used by Azure Apps to keep a user session on the same server. |
WLSSC | Functional | Helps to authenticate you when you sign in with your Microsoft account. |
X-FD-FEATURES | Analytics | This cookie is used for tracking analytics and evenly spreading load on the website |
X-FD-Time | Analytics | This cookie is used for tracking analytics and evenly spreading load on website |
x-ms-cpim-admin | Functional | Holds user membership data across tenants. The tenants a user is a member of and level of membership (Admin or User). |
x-ms-cpim-cache | Functional | Used for maintaining the request state. |
x-ms-cpim-csrf | Functional | Cross-Site Request Forgery token used for CRSF protection. For more information, read the Cross-Site request forgery token section. |
x-ms-cpim-ctx | Functional | Context |
x-ms-cpim-dc | Functional | Used for Azure AD B2C network routing. |
x-ms-cpim-geo | Functional | Used as a hint to determine the resource tenants home geographic location. |
x-ms-cpim-rc | Functional | Used for storing the relay cookie. |
x-ms-cpim-rp | Functional | Used for storing membership data for the resource provider tenant. |
x-ms-cpim-slice | Functional | Used to route requests to the appropriate production instance. |
x-ms-cpim-sso | Functional | Used for maintaining the SSO session. This cookie is set as persistent, when Keep Me Signed In is enabled. |
x-ms-cpim-trans | Functional | Used for tracking the transactions (number of authentication requests to Azure AD B2C) and the current transaction. |
x-ms-gateway-slice | Functional | Identifies a gateway for load balancing. |
Running Microsoft on your site? A free Conzent scan shows which of these cookies are set before consent, and the banner blocks them until the visitor agrees.
Last updated 2026-09-27.