Windows 8 build 7878

Windows 8 build 7878 is a build of Windows 8. Seven screenshots of this build were included with the original upload of build 7746. It was later shared on the BetaWiki Discord server on 4 June 2021.

New features and changes

 * The File History feature, originally known as History Vault, has been introduced in this build.
 * The modern setup client first introduced in build 7875 now includes a progress bar.

Immersive features

 * The Start screen tiles are now colored, and the Metro Horizon has been removed.
 * Right-clicking on a tile now shows a menu with several options.
 * Pattern logon is available if you set  in   to 1, however there's no option to use it on the login screen.

Installation

 * The messages shown when the Setup is starting or restarting the computer are cut off.


 * If using VMware Workstation versions 15.x or above, attempting to restart or shutdown in this build will cause a softlock. To fix this, use the Power menu from the VM section.

Out-of-box experience
Attempting to select a network type will result in a driver unload bugcheck.

General
In the Services MMC Snap-In,  text uses the Wingdings font.

Arial
This build uses the Arial font for the title bar and watermark because of a typo in the  and   files.

Personalization
Changing personalization options may occassionally crash File Explorer. This is caused by  and can be fixed by replacing the file with a copy from build 7875.

Language Bar
The new language bar is mostly broken in this build and only works on rare occasions.