IIS Returning Old User Names to my application

Question

Here\'s my scenario. I created an application which uses Integrated Windows Authentication in order to work. In Application_AuthenticateRequest(), I use

Answer 1

I know we've had cached credentials problems in IIS in the past here, too, and after Googling for days we came across an obscure (to us, at least) command you can use to view and clear cached credentials.

Start -> Run (or WinKey+R) and type control keymgr.dll

This fixed our problems for client machines. Haven't tried it on servers but it might be worth a shot if its the server caching credentials. Our problem was we were getting old credentials but only on a client machine basis. If the user logged in on a separate client machine, everything was fine, but if they used their own machine at their desk that they normally work on it had the cached old credentials.