I'm using 1903 insider and receiving the command window pictured above while using usb recovery..? Then again I've factory reset this device nearly a dozen times and it is always something new that prevents my utilizing any meaningful function. Code 500 seems to be one most common. To be completely honest, I'm beginning to believe (based on folders of Dev reports) that I'm dealing with hackers within Microsoft proper. Support has provided 0 assistance on any of a number of issues. Moreover attempts to set up 2 step verification go through and are validated, however upon powering on for the next use th password does not work nor is two step verification set up. Tabbing through code in an admin prompt window reveals hundreds of .dll commands I've never heard of. Enterprise level forensics receive access denied in command lines, while find, finger and mrinfo do not exist, are not files... Unfortunately I don't lose, know how to quit, understand what can't is nor value anything above the shared vision I will see brought to fruition.