|When running on NT Workstation, 2000 Professional, or XP Professional, IIS has a hard-coded limit of 10 concurrent connections. As far as we know it is not possible to increase this. When running on NT Server, 2000 Server or .NET Server, IIS does not have this limitation.
As for ServletExec:
If ServletExec is running in an Unregistered mode then it will only handle 3 requests simultaneously. Concurrent requests beyond this limit will result in an HTML response page that says something like this:
When not registered, ServletExec supports a maximum of 3 concurrent