Microsoft has released ISO disc images of the latest Technical Preview build of Windows 10, but not because they think every tester should install it. Rather, it's because a bug is preventing even some of the more aggressive testers from receiving it through Windows Update.
The release, known as Build 10130, was released to the Windows Insider program's Fast release ring on May 29 - Fast ring testers get the buggiest copy whereas Slow ring signups get cleaner, but later, code. Anyone who configured their Windows 10 box to receive builds before they're thoroughly tested should have received it via Windows Update beginning around then – but that hasn't worked for everyone.
"We know that a bunch of Windows Insiders on the Fast ring are currently blocked getting to the latest build due a 0x80146017 error," Gabe Aul, Microsoft's official Windows Insider scoutmaster, said in a Friday blog post. "With the ISOs, they can mount the image and upgrade directly from the ISO and get unblocked."
Aul was quick to point out, however, that this isn't an indication that those on the Slow release ring will want to download and install Build 10130 this way. In fact, Microsoft has decided it might not release this build to the Slow ring at all, because it's still working on fixes for some key bugs in it.
"Once we have these fixes in hand and ready to push out to Windows Update, we'll consider pushing Build 10130 to the Slow ring," Aul said.
Don't count on it, though. Microsoft hasn't been shy about restricting builds in the Fast ring when it thinks they're a bit too rough around the edges, including Build 10049 and Build 10061.
If you're keen to be sure you always have the latest Technical Preview of Windows 10, though – and there are a number of improvements in Build 10130, including new icons and improvements to the new Microsoft Edge browser – you can download the ISO images here. ®