Windows 8 build 8277

Windows 8 build 8277 is a build of Windows 8, which was uploaded to BetaArchive on 4 January 2019 as an x64 checked/debug version. It is the last build to use the flag from Windows XP, Vista and 7 in both the setup and charms bar. Despite having a higher build number than the official Consumer Preview, it was compiled nine days earlier, in a similar fashion to Windows Vista build 5712, Windows 7 build 7106 (winmain) and Windows 10 build 10102. This build is the first to include the sound "Proximity Notification" which notifies on a proximity sound.

Unlike build 8220, this build shows the Microsoft Confidential watermark in both the desktop and winver.