Windows 10 build 14251

Windows 10 build 14251 is the fourth Insider Preview build of Windows 10 Anniversary Update, which was released to Windows Insiders in the Fast ring on 27 January 2016.

Bugs

 * Due to bugs in this build（vary between SKUs, languages, and archticures), the setup may complain that  is being corrupted during the installation, which prevents user to continue. It can be bypassed by pressing Shift to open Command Prompt, and executing the following command before continuing the setup process:


 * If you choose "Reset this PC" under Settings - Update & Security - Recovery, the system will be left in an unusable state. The only workaround is to reinstall Windows.
 * You can encounter a  after logging in. The workaround to stop the error is to run the following in Command Prompt with adminstrative rights:
 * The Connect button does not show up in Action Center. The workaround is to press Win and then click on "Connect to a wireless display".
 * Due to a memory management change going on this build, the user might observe frequent app crashes or other memory-related errors.
 * The F12 developer tools do not load in Microsoft Edge.