Troubleshooting a Looping Database Log On
"A common issue when viewing reports over the web is a persistent database log on prompt or what is commonly referred to as a “looping log on”. This document will explain the various causes of this issue and methods for resolving it for Crystal Enterprise (CE). The target audience for this document is network administrators, web server administrators and database administrators. The information in this document applies to Crystal Reports and Crystal Enterprise versions 9 and 10."