 <p>Perhaps CCTray gets around this? </p> <p>what's the authentication mechanism you are using (forms, windows auth, federated, etc.)? </p> <p>Our CC.Net servers I make changes to about every 5 minutes while I'm working on setting up a project and have never seen this error. Everyone does run CCTray, but the cc.net servers are not internet accessible so no login is required. The IIS manages authentication seamlessly through ActiveDirectory. Is your cc.net server internet facing?</p>