Windows 10 build 14251

Windows 10 build 14251 is the fourth Insider Preview build of Windows 10 Anniversary Update. This build was released to Windows Insiders in the Fast Ring on 27 January 2016. It isn't that different to the previous builds.

Setup
Due to bugs in this build, you'll have to copy all .dll and .exe files from the sources folder of the ISO to X:\sources, otherwise setup will complain about install.wim being corrupted and you will not be able to boot. This can be done by opening Command Prompt via Shift+F10 and typing both xcopy D:\sources\*.dll X:\sources and then doing the same but replacing *.dll with *.exe.

Other bugs

 * If you choose "Reset this PC" under Settings - Update & Security - Recovery, the system will be left in an unusable state. 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+P 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.