We've started to see instances on our Intranet server where for any page the server just responds with the error page 'HTTP/1.1 New Session Failed'. It seems we can fix it by running IISRESET but this feels like we're only treating the symptom.
The server is a virtualised server running IIS6 on Windows Server 2003 with 0.5Gb of RAM. Our Intranet is written in ASP, but we also have ASP.NET 2.0 applications running on the web site. The site is set up for Anonymous and Integrated Authentication.
What causes IIS to get into this error state? Could the server be saturated with requests i.e. we need to scale out and move some applications onto another server?
I've seen KB210842 but I'm not sure it applies as that is applicable to IIS 4
Best Answer
How much memory is available when you get that error? If you've saturated all memory, new sessions will fail.