Another Insiders build for Windows 10 Fast Ring folks. Hit Windows Update to grab it now!
Of course, this huge glaring bug is still a known issue. I really hope this gets fixed soon. I read a lot of posts where people are not upgrading due to this.
If you have a 3rd party antivirus product installed on your PC – your PC might not be able to complete the update to this build and roll-back to the previous build.