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Cookies are very small text files that are stored on your computer when you visit some websites. They are commonly used to retain settings or other features ready for your next visit.

We use cookies to make InstantAtlas Server perform better; remember various user settings; identify logged in users and better tailor the site to the end user. None of the cookies set by InstantAtlas Server software are classed as intrusive.

Information on deleting or controlling cookies is available at Please note that by deleting our cookies or disabling future cookies the website will not work as designed and some functionality may not work.

A list of the cookies set by InstantAtlas Server are shown below:

Cookie NameDescriptionExpiry
ias.UiSkinRemembers which "look and feel" you have applied to the IAS user website (if there is more than one available)End of session
ias.PreferredItemCountRemembers how many items you like to see in a list by defaultEnd of session
ias.fontSizeRemembers any choices you have made to increase/decrease the default font size using the buttons in the top rightEnd of session
ias.LocaleRemembers the choice you made about which locale/language to view the site in (if more than one available)After 1 month
ias.<ThemeTreeID>_ExpandedRemembers the choices you made about which themes were expanded in a tree (on a tree by tree basis – different cookies for different trees)End of session
ias.LastActivityDateRemembers the last time you logged in to the IAS user website so that the "latest changes" box shows the correct itemsEnd of session
.IASASPXAUTHThe built-in forms authentication cookie for ASP.NET. Used when user logs in.End of session
ASP.NET_SessionIdBuilt-in ASP.NET cookie that records which server session you are currently connected toEnd of session

Organisations may add further functionality to InstantAtlas Server that can cause additional cookies to be set. Common examples of these are the use of tracking software such as Google Analytics. These cookies do not form part of the InstantAtlas Server software and are not described in this table.

Can I turn cookies off?

Most modern browsers allow you to turn cookies off or fine-tune which cookies you allow. Note that if you turn cookies off you will not be able to sign in to InstantAtlas Server. The links below give more details on managing cookies.


InstantAtlas™ Server (IAS) v6.6.0