Intermittent Windows Login Prompt on ASP .Net intranet
Posted on 2011-03-11
I've put together some simple intranet pages for work, using ASP .Net, all was going well until testers began reporting an issue about windows login prompts interrupting their experience.
What appears to be happening is a prompt is emerging for the server itself - I say this based on the username which is being pre-populated (it is the generic user login for the server, not the tester's actual windows lan ID).
Reading the forums online, this seems to be a common enough problem, the answers to which seem partially correct but do not seem to explain why this is intermittent. In my case, one user will experience it continually, then it disappears the next day. Flushig out the Internet Explorer temp files/cookies etc seems to help for some users but not others. I can't yet see the pattern here.
The server I am using is NOT in the list of intranet sites populated into IE 7 by our administrators.
A quick test on the one PC we could find running the chrome browser did not trigger the issue.
The intranet page web.config is set for windows authentication, IIS is set to Integration Windows Authentication And Allow anonymous users.
Appreciate any thoughts on how I might tackle diagnosing this one.