Cache and Sessions not Clearing in Windows 2003 Server SP2

This article explains a situation where the cache and the sessions for IIS are not removed from the system as expected.

If you have installed Windows 2003 SP2 onto your server, there is a possibility that the number of IIS Sessions will not reduce when a user logs off from MailSite Express. This also leads to the Cache directory not being cleaned up by the Session_OnEnd clean up process within the global.asa.

This seems to only affect systems that have Service Pack 2 installed. Microsoft have release a KB doc that provides more information about the issue - KB 934903

We have spoken to Microsoft and we have obtained the hot-fix for Windows 2003 Server SP2 only. If you would like this hot-fix click this link Download Link.