Known Issues - Windows 10 Desktop Insider Preview Build 14951
Signing into apps such as Feedback Hub, Groove, MSN News, etc. with your Microsoft Account if you sign out or get signed out of these apps will not work. If this happens to you and you cannot sign in to Feedback Hub, you can send us feedback via the forums.
You may experience a crash while using the protractor in Sketchpad - we're working on a fix.
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.