I’ve got a situation with a large internal corporate web based application running ASP.NET 3.5 on IIS6 generating 401 “Unauthorised” responses followed by 200 “Ok” responses
CSCRIPT.EXE c:\inetpub\adminscripts\ADSUTIL.VBS SET W3SVC/AuthPersistSingleRequest FALSE
Will reduce the amount of 401's significantly.