Windows Vista build 5048

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Build of Windows Vista
OS family
Architecturex86, x64
Timebomb2005-09-28 (+180 days)
Works in
TCB.png TCBGallery.png

Windows Vista build 5048 is a pre-Beta 1 build of Windows Vista. This build was released to attendants of WinHEC 2005 on 24 April 2005, and it was officially known as the "Longhorn Developer Preview".

Being a pre-beta 1 build, it is noticeably closer to Windows XP and Windows Server 2003 than to pre-reset builds. It is also an idx02 build, which suggest that it was recompiled several times, and therefore is behind regular builds compiled at the time. The x64 version of this build is similar to the x86 build, but it has a different EULA and Windows XP x64 Edition brand wallpaper instead of the Windows Server 2003 brand wallpaper which is named as winxp.jpg.

Unlike other post-reset Vista builds, it was compiled in evaluation mode, and it can be installed on the current date. The timebomb in evaluation mode behaves just like pre-reset builds; if the timebomb expires, the user is automatically logged out.

Setup[edit | edit source]

Although previous builds of post-reset Vista re-used the older i386 installation process, this build re-uses the Windows Preinstallation Environment installation process from later builds of Longhorn, retaining the slate theme as well. However, a few changes have been made. The launching WinPE screen does not show anymore, now leaving you without any option of pressing F6 to load in certain drivers. The starting setup screen has also been majorly uplifted, now containing the Windows flag. Anti-aliasing is no longer present on fonts, and the numbers on the progress bar no longer glow. Finally, the hardware portion of setup now includes a dummy progress bar on the bottom (all it does is just continuously increase in size until it reaches the end, then it goes back to the start), and the Windows flag has been added to the middle of the page. Asides from all of these minor changes, setup is overall mostly similar to what was found in later pre-reset builds of Longhorn. The setup autorun is notable for containing a mention of Beta 1, in this case the second button is labeled View Beta 1 Release notes.

New features and changes[edit | edit source]

  • This build includes Windows System Assessment Tool (shortly WinSAT) and Windows Diagnostic Infrastructure (WDI).
  • The Jade and Slate themes are no longer included.
  • Windows Media Player 10 and Internet Explorer 6 SP2 are also now present.
  • Sync Manager (Later known as Sync Center) has been introduced.
  • Many of the icons from later pre-reset builds have returned, albeit with minor alterations. A few icons are also new to this build. However, the Control Panel and Printers icons are from Windows 95.
  • This build uses the old way of logging in (the one seen in Windows 2000) by default. The 'new' login screen can be enabled in the control panel, but it is just an exact replica of Windows XP's login screen.
  • This build uses BOOTMGR as the default bootloader, but still includes NTLDR as an alternative way to boot. This can be seen via a dual boot. As a result, this build also contains the notable red screen (RSOD) when a boot error occurs. This build is the first to not boot without ACPI, since it results in an error.
  • You can choose a bunch of different themes, including the Windows XP Luna themes, the classic theme, and the three new Aero themes.
  • Paint received an update which added a zoom slider to the app (it was readded from Windows Longhorn build 4051).
  • Self-Healing NTFS was reintegrated from Windows Longhorn build 4074.
  • Instant Search was implemented in this build.
  • Control Panel's Category View was revamped and applets were added for installed programs.
  • Search UI was updated to manage search criteria specifications.
  • Microsoft Anna Speech Synthesizer from build 4093 was added. However, it is slightly different.
  • Advanced Options has a blue background, rather than black seen in RTM.

Start Menu[edit | edit source]

  • Start Menu received many new updates in this build including the famous search box that will later be seen in Windows Vista and Windows 7, and the outlining of the start menu being transparent.
  • "All Programs" menu is now an inline menu and it doesn't open in a separate context menu-like UI.
  • Customize Start Menu has references to "My Games" and "My Hardware" links.

Aero[edit | edit source]

  • This build makes the debut of the Aero theme, by default it is loaded without DWM.
  • This build includes three new Aero themes.
  • One of the new Aero themes (Theme 2) use a similar design to later builds of Vista (The only difference is that the minimize and maximize buttons are little arrows, minimize arrow points down and maximize arrow points up, but other than that, its basically the same.)
  • Aero theme is now the default theme overall system, along with its visual effects and wizards.

Desktop Window Manager[edit | edit source]

This build of Vista readds the Desktop Window Manager, after being absent in builds 4083-4093 (including Omega-13 builds 3790, 5000 (with multiple compiles) and 5001). This build includes Desktop Window Manager, but it can crash at startup if no driver is installed, in which case software emulation is needed if no driver is available. LDDM drivers are now included by default, supporting many (but not all) GPUs of the time, however the DWM can run with a regular XPDM driver, using a registry edit.

There are two different ways of initializing DWM, one by modifying the registry, while the other being initializing a DLL via rundll32.exe. The more simpler rundll32.exe method is simply opening up the command prompt, and typing rundll32 udwm.dll,DwmClientStartup. This, however, randomizes the effects used with DWM. The other method of initializing DWM can be done via opening the Registry Editor, navigating to HKEY_LOCAL_MACHINE/Software/Microsoft, creating a new key called DWM, then creating the following 3 DWORDs inside the key:

Key Values
EnableMachineCheck 1 - enabling machine check, which disallows the possibility of using XPDM drivers

0 - disables machine check

ForceSoftwareD3D 1 - forces software rendering

0 - hardware rendering

Metal 1 - makes the titlebar yield an opaque a metal-like style

0 - transparent titlebars

UseAlternateButtons 1- square-like buttons

any other value - smaller Vista-like buttons

Once making the following changes, simply log out of the system, then log back in.

User Account Control[edit | edit source]

Bugs and quirks[edit | edit source]

  • The setup switches to 16-bit color 800x600 video mode after briefly using 24-bit 640x480 during its startup, resulting in a noticeable dithering effect of the background during setup.
  • There is a limit of 50 files able to be browsed per folder, but it can be bypassed by viewing icons in groups.
  • Enabling auto login for the default user account while having the new login screen enabled can make the login screen throw up an error. This can be safely ignored.
  • Help and Support does not open due to a missing helpctr.exe, but an updated help application, called HelpPane.exe, can be found in the Windows folder.
  • Although this build can partition properly during setup, the partitioning page doesn't refresh properly, requiring you to reboot your system in order to see the new partition.

Upgrading[edit | edit source]

While this build requires build 5019 or higher to upgrade to, preupgradenotice.txt in the sources folder lists various bugs that will be encountered when an upgrade takes place.


Longhorn ReadMe File for Internal Upgrades
Quality Statement
Build to build CBB upgrades complete OS migration successfully without data loss or a reinstallation of the OS, and a functional migration of the following items:
1.  Applications
·  Office 2003
·  Product Studio
2.  Developers’ Environment
·  Razzle Environment
·  Visual Studio 2005 Beta 1
·  Visual Studio 2003
3.  System Settings
·  Domain Membership, Security accounts with password, Computer Name
Measurement is based on a minimum of 100 systems installs (50 Lab and 50 Self Host system upgrade completions) and meeting the Longhorn Quality Gates.  For more detail on the release criteria, see http://winweb/warteam/_content.asp?id=46&r=905

** Restricted upgrade scenarios **

Upgrade is *NOT* supported in the following scenarios for this RI:

1.  OS being upgraded is a build lower than 5019 *
2.  OS being upgraded is an INF build (only CBB -> CBB upgrades are supported) *
3.  OS being upgraded is newer than the one being installed
4.  OS being upgraded is 64-bit, setup being run is x86
5.  OS being upgraded is a server build
6.  OS being upgraded is LH Home, setup being run is LH Pro
7.  OS being upgraded has multiple OS’s installed on the target partition

* Upgrade support is planned for these scenarios in future milestones.

** Known Migration Issues **

Some system settings don’t migrate

For this RI, system settings are not expected to migrate correctly yet – this is by design.  Known issues include the failure to migrate:
·  Mapped network drives
·  IE pop-up blocker – allowed sites
·  IE toolbars
·  Proxy server info
·  Printers & faxes
·  Folder attributes (sharing, compression, redirection, etc.)
·  Some desktop shortcuts

System setting migration will be supported by Beta 1.

**  Drivers do not migrate **

Some drivers (e.g. out-of-box video drivers) do not migrate.  You’ll need to reinstall drivers for now.  Going forward, more robust driver migration will be supported.  (Bug 1061700)

**  Upgrading a laptop results in loss of network connectivity. **

Temporary workaround is to use a wired connection and rejoin the domain.  (Bug 1062094)

**  Product Activation (WPA) timer is not reset on migration **

If Windows is not activated prior to migration, the 15-day activation timer continues to count down post-migration from the date of the last clean install.  The simple workaround is to activate Windows.  (Bug 1062178)

**  Fonts installed by applications are not installed to the system.  **

Temporary workaround is to retrieve the font from the Quarantine folder.  (Bug 1060342)

**  Outlook shortcut icon is not displayed in Start menu after migration; icon used doesn’t launch Outlook. **

Shell settings are slated to be migrated properly in the last RI prior to Beta 1.  (Bug 1059072) 

**  The home page of the .Net framework documentation becomes **

This is an IE setting, also slated for migration in the last RI prior to Beta 1.  Workaround is to repair the .Net framework install.  (Bug 1056495)

**  Visual Studio .NET 2003 Command Prompt -- one of the .NET tools is not migrated on the target machine. **

Command prompt still works fine – just the shortcut is missing.  Workaround = Start -> Run -> “cmd”.  (Bug 10565056)

File differences[edit | edit source]

The following files have been introduced, renamed or removed from build 5001:

Added files
Name Description Version
wmstream.dll Windows Media Streamer DLL
wmvadvd.dll Windows Media Video 9 Decoder
wmvadve.dll Windows Media Video 9 Decoder
WMVDECOD.DLL Windows Media Video Decoder
WMVENCOD.DLL Windows Media Video 9 Encoder
WMVSDECD.DLL Windows Media Screen Decoder
WMVSENCD.DLL Windows Media Screen Encoder
WMVXENCD.DLL Windows Media Video Encoder
wpdconns.dll WPD Connection Objects 5.2.3790.3658
wpdmtp.dll 5.2.3790.3658
wpdmtpdr.dll 5.2.3790.3658
wpdmtpus.dll Usbscan transport layer for MTP driver 5.2.3790.3658
wpdtrace.dll WPD Tracing 5.2.3790.3658
wscmisetup.dll Installers for Winsock Transport and Name Space Providers 6.0.5048.0
WSDApi.dll Web Services for Devices API DLL 6.0.5048.0
wshBth.dll Windows Sockets Helper DLL
wshirda.dll Windows Sockets Helper DLL 6.0.5048.0
WUDFCoinstaller.dll Windows Driver Foundation - User-mode Platform Device Co-Installer 6.0.5048.0
WUDFHost.exe Windows Driver Foundation - User-mode Driver Framework Host Process 6.0.5048.0
WUDFPlatform.dll Windows Driver Foundation - User-mode Platform Library 6.0.5048.0
WUDFSvc.dll Windows Driver Foundation - User-mode Driver Framework Services 6.0.5048.0
wups2.dll Windows Update client proxy stub 2
xmlrw.dll Microsoft XML Slim Library 2.00.3526.0
Renamed files
Old filename New filename Old description New description Version
Moon flower.jpg Moon.jpg
Purple flower.jpg PurpleF.jpg
Red moon desert.jpg RedMoon.jpg
Stonehenge.jpg StoneH.jpg
Vortec space.jpg Vortec.jpg
Windows XP.jpg winxp.jpg
Removed files
Name Description Version
wmvdmod.dll Windows Media Video Decoder
wmvdmoe2.dll Windows Media Video Encoder
wowfax.dll Windows 3.1 Compatible Fax Driver DLL
wshatm.dll Windows Sockets Helper DLL 6.0.5001.0
wshisn.dll NWLINK2 Socket Helper DLL 6.0.5001.0

Gallery[edit | edit source]

Aero themes[edit | edit source]