downloaded and burned to a CD evaluation build 14295.rs1 release 160318-1628. It installed
That leaves me to wonder, why are we talking about "build 11082"
I still get the message about 15July
What is producing that message, and what does the message say exactly.
Is this the latest build?
The latest version available right now is Build 14379.rs1
It sounds to me like you may have gotten caught up with some issues, right around the time that they switch the whole product key thing around and announced that no previously available product keys would serve to activate Windows 10 Preview any longer.
the option for Fast Insider is grayed out and the Stop Insider Builds is also grayed out
I'm still not sure which build you have installed and whether or not that particular build is currently activated.
Those options might be grayed out if....
You don't have anything installed on the machine, so you can't stop insider builds. I believe that when you stop insider builds there has to be a previous version of Windows 10 in place to revert to.
As far as switching to "Fast"....
I'm not sure what the current state of availability is for any insider versions that are being made available to either 10240 or 10586 versions.
14295 of course is not a Threshold build but a Redstone build and they are coming hot and heavy 3 in the last week I believe.
You may need to start over with a legitimate install of Windows either 7 SP1 or 8.1 and upgrade to 10 or if you did have a version of 10 installed then you should be able to install that again immediately with no problem.
After which, if you choose, then you can rejoin the Insider Program.