Windows 7 build 6519

6.1.6519.1.winmain.071220-1525
Build of Windows 7
Screenshot
Release nameMilestone 1
OS familyWindows NT
Version number6.1
Build number6519
Build revision1
Architecturex86, x64
Build labwinmain
Compiled on2007-12-20
Expiration date
Timebomb2008-05-07 (+139 days)
SKUs
Starter
Home Basic (N)
Home Premium
Business (N)
Ultimate
About dialog
Windows7-6.1.6519-About.png
TCB.png TCBGallery.png

Windows 7 build 6519 is the official Milestone 1 build of Windows 7, which was uploaded to the BetaArchive FTP server on 10 June 2008.[1]

Components from the x64 checked/debug flavor of this build were discovered on the Microsoft Symbol Server on 18 June 2022.

New features and changes[edit | edit source]

Hardware support[edit | edit source]

This build introduces a feature internally known as "drift correction", which resolves issues related to Intel CPUs' timestamp counter (TSC) circuit timing that could either potentially prevent services from starting up correctly, cause unexpected shutdowns and/or break the Windows component-based servicing stack entirely.

Redpill-specific functionality[edit | edit source]

Libraries[edit | edit source]

Nine additional library folders have been added to the existing Libraries system, and the invalid folder path bug that prevented the creation of new libraries has been fixed. A new icon design for libraries has also been introduced, depicting an assortment of folders neatly organized within a plastic divider.

Bugs and quirks[edit | edit source]

Installation[edit | edit source]

  • Initialization text displayed after the first setup phase may be truncated if setup is started at a resolution lower than 1024x768 pixels.
  • The first phase reboot countdown is not displayed properly and will draw over existing user interface elements.

Miscellaneous[edit | edit source]

  • The User Account Control icon is not displayed properly on applications that require administrative elevation.
  • Context menu elements may persist on the user's display area after selecting an item. The only way to work around this is to log out of the session and log back into the previously used user account.
  • Interacting with UI elements, dragging or resizing the Windows Media Player application may result in an application deadlock.

Gallery[edit | edit source]

Windows Setup[edit | edit source]

Out-of-box experience[edit | edit source]

Miscellaneous[edit | edit source]

Interface[edit | edit source]

Applications[edit | edit source]

Windows Explorer[edit | edit source]
Control Panel[edit | edit source]
Applets[edit | edit source]
Media[edit | edit source]
Miscellaneous[edit | edit source]

References[edit | edit source]