I have Insider account but and I'm also logged as Insider user but still I get following error
"Sign up as an Insider You’re just a couple steps from getting the latest version of Windows 10 IoT Core!" when I a'm trying to download Windows 10 IoT Core Insider Preview.
How do I get this Windows 10 IoT Core Insider Preview downloads?
Once you have downloaded and installed the image, you must use DISM to copy the flash image to your device's storage medium.
Steps to prepare microSD for Raspberry Pi 3
Insert microSD card to PC
Open an administrator Command Prompt
Execute \>DiskPart
List Disk
Exit
Look for the ### of the disk that is your microSD card
Now change to the directory that the Insider Preview image was extracted to, in my case this is:
C:\Program Files (x86)\Microsoft IoT\FFU\RaspberryPi2>
Use DISM to format your microSD card with this image:
dism.exe /Apply-Image /ImageFile:flash.ffu /ApplyDrive:\\.\PhysicalDrive2 /SkipPlatformCheck
Once that's done, plug your microSD card into your device and you're ready to go!