Windows 2000 build 1671

Windows 2000 build 1671 is the official Beta 1 build of Windows 2000, which was released on 23 September 1997https://news.microsoft.com/1997/09/23/windows-nt-5-0-beta-delivered-to-over-200000-developers/. This build is available in both English and Japanese languages.
== NFO file ==
==Changes==
* Setup now fully supports an upgrade from Windows 95 OSR2. The message that Windows 95 OSR2 has not been fully tested for an upgrade no longer appears when the user selects the upgrade option in setup.
*This is the earliest available build with text-to-speech technologies being installed, in this case being "Microsoft Speech API 3.0" and the "Microsoft Text-to-Speech Engine (Technology Preview)". Microsoft Certificate Server is now also installed by default.
*The "Ports" Control Panel applet has been removed.
*Added the The ACPI Bios in this system is not fully compliant to the specification. Please read the README.TXT for possible workarounds, or contact your system vendor for an updated Bios. (0xA5) bugcheck code, which would later be renamed to ACPI_BIOS_ERROR.
*A new startup sound has been introduced, which would be used until build 1911.
==Installation notes==
According to READ1ST.TXT on the installation media: 
*An upgrade from Windows NT 3.51 is not supported at this time.
*The reparation of this build by using the Emergency Repair process is not supported.
*Support for ISDN, WAN, multiple identical adapters and PC cards is limited.
* The detection of early AMD PCnet adapters can cause the system to stop responding, and there is no workaround at this time.
*The original Intel EtherExpress PRO/100 PCI adapter (E100A) is not supported. Only the E100B PCI models and later are supported.
*Installing or upgrading to this build with a NE2000 or compatible network adapter set to an I/O address of 340 hex can cause the system to stop responding when booting into text-mode setup. Removing the adapter or changing the I/O address can resolve this problem.
*On an Alpha-based system, all 1.x versions of Digital FX!32 prevent the Windows NT Explorer from working properly.
* It is recommended to disconnect the serial cable connecting an UPS before starting Setup, as Windows NT attempts to automatically detect devices connecting to serial ports, which can cause problems with UPS equipment.
In addition, upgrading from beta releases of Windows 98 is not supported.
== Bugs and quirks ==
*The x86 version of this build can crash on newer CPUs because of CMPXCHG8B detecting issue. Limit maximum CPUID leaf or use older hardwares/emulators can prevent crashing.
*The S3 ViRGE/GX2 display adapter is supported in this build, but as the VGA drivers are installed instead, the display can only reach 800x600 as maximum screen resolution at 16 colors.
* The gameport driver used for Sound Blaster and Crystal sound cards does not work in the checked/debug compile and causes a bugcheck upon installing.
==Gallery==
===English language variant===
Windows NT 5.0 build 1671-2019-12-22-17-38-08.png|Boot screen
1671-Setup.png|Setup
1671-PreparingDirectory.png|Preparing directory
1671-CopyingFiles.png|Copying files
1671-NonActiveDesktop.png|Default non-Active-Desktop theme
Windows2000-5.0.1671-ServerDesktop.png|Server desktop
Windows2000-5.0.1671-IISSetup.png|IIS setup
Windows2000-5.0.1671-SystemProperties.png|System Properties
Windows2000-5.0.1691-Safe.png|Safe to shutdown screen (Workstation)
Windows2000-5.0.1701-Safe.png|Safe to shutdown screen (Server)
====Debug====
Windows2000-5.0.1671-ChkDesktop.png|Desktop
Windows2000-5.0.1671-ChkSP.png|System Properties
Windows2000-5.0.1671-ChkWinver.png|winver
===Japanese language variant===
Windows-2000-NT-5.0-1671-Japanese-Setup1.png|Setup
Windows-2000-NT-5.0-1671-Japanese-Setup2.png|EULA
Windows-2000-NT-5.0-1671-Japanese-Setup3.png|Keyboard selection
Windows-2000-NT-5.0-1671-Japanese-Setup4.png|File system options
Windows-2000-NT-5.0-1671-Japanese-Setup5.png|Copying files
Windows-2000-NT-5.0-1671-Japanese-Setup6.png|Ready to restart
Windows-2000-NT-5.0-1671-Japanese-Setup7.png|Initalizing setup
Windows-2000-NT-5.0-1671-Japanese-Setup8.png|Welcome
Windows-2000-NT-5.0-1671-Japanese-Setup9.png|Setup options
Windows-2000-NT-5.0-1671-Japanese-Setup10.png|Set time zone
Windows-2000-NT-5.0-1671-Japanese-Setup11.png|Set screen resolution
Windows-2000-NT-5.0-1671-Japanese-Setup12.png|Set date and time
Windows-2000-NT-5.0-1671-Japanese-Setup13.png|End of setup
Windows2000-5.00.1671-PC-98-Boot.PNG|Boot screen (PC-98)
Windows-2000-NT-5.0-1671-Japanese-Login.png|Login screen
Windows-2000-NT-5.0-1671-Japanese-Desk.png|Desktop
Windows-2000-NT-5.0-1671-Japanese-Winver.png|Winver
Windows-2000-NT-5.0-1671-Japanese-SystemProperties.png|System Properties
Windows-2000-NT-5.0-1671-Japanese-Shutdown.png|Shutdown screen
===Miscellaneous===
NT1671CDSRV.png|x86 English CD [Server]
Windows2000-5.0.1671.1-(Server)-(PDC'97)-CD.jpg|x86 English CD [Server] [PDC '97]
Win2k-1671-DEC-Alpha-EN-CD.jpg|DEC Alpha English CD [MSDN]
Win2k-1671-DEC-Alpha-EN-CD-Chk.jpg|DEC Alpha English CD (Debug/checked) [MSDN]
==References==
Category:Windows 2000 builds