Windows Vista/6.0.5048.winmain idx02.050401-0536

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5048DWM.png
Windows "Longhorn" 6.0.5048
Kernel version NT 6.0
CPU architecture x86, x64
Edition Professional
BIOS date April 2, 2005

Windows "Longhorn" build 5048 (with a build tag of 5048.winmain idx02.050401-0536) is the first Omega-13 build of Windows Vista to leak after the development reset of Windows "Longhorn". It was released to attendants of WinHEC 2005, and was known as the "Longhorn Developer Preview".

A "Longhorn" concept seen in the AERO Feel promotional video displaying a search box on the Start menu. Build 5048 realizes this feature.

Build 5048 includes a number of design concepts and features that would be present in the RTM version of Windows Vista, including the Windows Aero theme and visual effects, a search box in Windows Explorer, a new Category organizational structure for the Control Panel, and the Sync Manager. It is the also the first known build to include an instant search feature on the Start menu—a feature previously present in "Longhorn" concepts—and also introduces a treeview for the "All Programs" view on the Start menu.

This build also notably includes preliminary features that were prominent within the pre-reset "Longhorn" interface, though they do not work by default: The "Show Picture Preview on Hover" feature for pictures in Windows Explorer that was present in pre-reset builds; and a reference to Ink File Names—a feature previously shown during PDC 2003[1] and discussed during WinHEC 2004.[2] Checkboxes—previously seen in pre-reset "Longhorn" Build 4051—are also included in Windows Explorer, but are not enabled by default.

While Microsoft had made a significant amount of progress in reinstating "Longhorn" features, many were surprised that this and similar builds more closely resembled Windows XP and Windows Server 2003. Technology blogger and Windows enthusiast Paul Thurrott once stated:[3]

"My thoughts are not positive, not positive at all. This is a painful build to have to deal with after a year of waiting, a step back in some ways. I hope Microsoft has surprises up their sleeves. This has the makings of a train wreck."

This build includes DWM, but it can crash when starting. Betaarchive user ovctvct wrote a tutorial on how to enable DWM without any crash.

Features

Windows "Longhorn" Build 5048 includes preliminary versions of core features that would appear in the RTM version of the operating system. As build 5048 is the first build to be released publicly by Microsoft after the development reset, it is notable and significant for being the first post-reset build to incorporate many of the concepts and features that were seen previously.

Some of its features include:

  • A new zoom feature in Microsoft Paint previously observed in Windows "Longhorn" Build 4051
  • Aero Wizards
  • Advanced Search UI
  • Desktop Window Manager
  • Help and Support Center (Help Pane)
  • Improvements to Windows Explorer, including the addition of the breadcrumb bar, the Command Bar, the reinstatement of the Details Pane, capacity indicators for partitions in Computer, column headers for all icon viewing modes, and new options for grouping and sorting files, checkboxes for files
  • Ink File Names
  • Instant Search
  • Lists
  • "Longhorn" Error Reporting
  • Microsoft Anna speech synthesizer
  • Network Access Protection
  • Network Location Awareness (NLA)
  • New Category Control Panel viewing mode and applets for installed programs
  • People Near Me
  • Portable Media Devices Control Panel applet seen in "Longhorn" 4074
  • Scalable icons (Holding the CTRL key and using a mouse scroll wheel)
  • Self-Healing NTFS
  • Speech recognition; speech training wizard
  • Start menu features, including a search box and inline "All Programs" menu
  • Sync Manager
  • User Account Control
  • Windows Diagnostic Infrastructure (WDI)
  • Windows System Assessment Tool (WinSAT)

Gallery

References