Windows Vista build 5252

6.0.5252.0.winmain.051026-1836
	Build of Windows Vista
OS family	Windows NT
Version number	6.0
Build number	5252
Build revision	0
Architecture	x86
Build lab	winmain
Compiled on	2005-10-26
SKUs
	Ultimate

Windows Vista build 5252 is an unleaked pre-Beta 2 build of Windows Vista. This build was showcased in a blog from Chinese IT consumption portal Yesky.^[1] This is one of first builds to have everything merged from other branches such as vbl_ux_dev_checkin to the winmain branch.

Changes[edit | edit source]

The background used during installation has been changed to the aurora found in build 5259. The older setup layout from build 5098 is still retained in this build.
The Start orb, first seen in build 5212 (vbl_ux_dev_checkin), has been changed to appear closer to the final iteration present in the RTM build. It also features the new Start menu that was first seen in build 5221 (vbl_ux_dev_checkin_gamesux).
A new desktop wallpaper has been introduced, which replaces the wallpaper first seen in build 5054.
The Windows Explorer banner background has been changed to a static blue-green gradient.
This build marks the first appearance of both Windows AntiSpyware (later renamed to Windows Defender) and Windows Mail, the successor to Outlook Express.
A new applet called "Performance Center" as well, which would be known as "Performance Information and Tools" in the final version of Vista.