The cookies listed in this article are required only for accessing the Backoffice. You can include these in your own cookie policy, if you wish.

    Necessary Cookies

    The below cookies are necessary while accessing the Umbraco Backoffice for functioning of the website or to allow you to enjoy the contents and services you request.

    Name Purpose Expiration
    UMB_PREVIEW Allows a previewed page to act as a published page only on the browser which has initialized previewing. Session
    UMB-WEBSITE-PREVIEW-ACCEPT Client-side cookie that determines whether the user has accepted to be in Preview Mode when visiting the website. Session
    umb_installId Used to store the Umbraco software installer id. Session
    UMB_UPDCHK Enables your system to check for the Umbraco software updates. Session
    UMB-XSRF-V Used to store the backoffice antiforgery token validation value. Session
    UMB-XSRF-TOKEN Set for angular to pass in to the header value for "X-UMB-XSRF-TOKEN" Session
    TwoFactorRememberBrowser Default authentication type used for storing that 2FA is not needed on next login Session
    UMB_SESSION Preserves the visitor's session state across page requests. Session

    The UMB_SESSION cookie is secure if you are using HTTPS pages. However, if you wish to secure the cookie in your code, add the following in the Program.cs file after Build();

    services.AddSession(options =>
            options.Cookie.Name = "UMB_SESSION";
            options.Cookie.HttpOnly = true;
            options.Cookie.SecurePolicy = CookieSecurePolicy.Always;

    For information on the rest of the cookies, see the Constants-Web.cs file on Github.