FIX: Cookie Sharing May Not Be Successful if the Application Nonsecure Host Has a Four-Part FQDN

When the fully qualified domain name (FQDN) of the application nonsecure host has four or more parts, and the top-level domain is a country domain (for example, www.computer.microsoft.fr), the cookie domain for the AuthTicket cookie and the ProfileTicket cookie is not set according the domain level settings of the application. Cookie sharing does not work in this scenario.

This problem does not occur if the top-level domain is an international domain, such as .com, .edu, .net, or .org.

A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

   Date         Time   Version     Size     File name
   -----------------------------------------------------
   03-Sep-2003  19:37  4.5.3330.0  193,049  Mscsauth.dll
   03-Sep-2003  19:37  4.5.3330.0  196,333  Siteauth.dll

Note For cookie sharing to work, the number of shared domain levels must be at least 2.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.