We’re suspending the availability of Windows 10 builds briefly while we prepare for that, and the next build that we flight to you will be delivered using the production channels. Starting tomorrow, we will also not be delivering any additional ISOs at this point as we really need Insiders to be using, stressing, and validating our distribution and upgrade processes. We’ll make ISOs available again in the future, but for now we ask you to upgrade your current build via Windows Update once the next build is released.
Specifically, this means that in the next 24hrs:
Builds 10162 and 10166 will no longer be offered over Windows Update, and whatever build you’re on will show as “up to date” if you check for new builds.
ISOs for build 10162 will be taken down from the
http://insider.windows.com site and prerelease keys will no longer activate builds.