Windows NT 3.x

downloadAccess Utility – A utility to assist users with disabilities to use Windows NT 3.5x. Sourced from Microsoft’s defunct FTP server. (329 KB)

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AGP Video Support Fix – AGP wasn’t initially supported with NT 3.51 or NT 4.0, only PCI mode worked correctly. When using a video card with AGP, opening the command prompt and maximising the screen would cause the screen to go black. Pressing ALT+ENTER would return back to a window. For Windows NT 3.51. AGP support was added in NT 4.0 SP3. (329 KB)

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Anonymous User Security Update – Applying this update restricts anonymous logon users the ability to list domain user names and enumerate share names. For Windows NT 3.51 SP5. This issue was fixed in NT 4.0 SP3. i386 (695 KB) Alpha (1 MB) Readme (10 KB)

downloadEuro Currency Update – Updates to include the Euro currency symbol in fonts and to map it onto the keyboard. For Windows NT 3.51 SP5. i386 (1 MB) Alpha (2 MB) Readme (6 KB)

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ICMP Update – Replaces the TCPIP.SYS file due to an issue where the computer may crash from receiving corrupt Internet Control Message Protocol (ICMP) datagram fragments from a client. For Windows NT 3.51 SP5 and NT 4.0 SP3. i386 (124 KB) Alpha (217 KB) Readme (5 KB)

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IDE/ATAPI Write Cache Update – Replaces ATAPI.SYS and ATDISK.SYS for improved compatibility with hard disks that support a write cache. If the write cache is not flushed when the PC shuts down, it potentially may cause issues when booting the next time. For Windows NT 3.51 SP5. This issue was fixed in NT 4.0 SP4. i386 (97 KB) Alpha (128 KB) Readme (4 KB)

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Intel Pentium Processor Invalid Instruction Update – If the affected processor receives an invalid instruction (CMPXCHG8B) it would cause the PC to crash. This was an issue with the original Pentium, Pentium MMX, OverDrive, and OverDrive MMX processors. If the PC had a 486 or earlier processor, a Pentium Pro or Pentium II, then the issue did not occur. For Windows NT 3.51 SP5. This issue was fixed in NT 4.0 SP4. (1 MB) Readme (7 KB)

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Malicious SYN Attack Fix – An update to prevent SYN attacks occurring from external sources hindering the server’s network connection unavailable. For Windows NT 3.51 Server SP5. This issue was fixed in NT 4.0 SP1. i386 (218 KB) Alpha (363 KB) MIPS (340 KB) PowerPC (286 KB) Readme (14 KB)

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Out of Band Update – Replaces the TCPIP.SYS file due to an issue when Out of Band data is received in the TCP header. For Windows NT 3.51 SP5 and NT 4.0 SP3. The TCPIP.SYS in this update is dated several weeks earlier than the one supplied in the ICMP update. For Windows NT 3.51 SP5. This issue was fixed in NT 4.0 SP4. i386 (123 KB) Alpha (216 KB) Readme (4 KB)

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PCMCIA Update – Resolves an issue replacing the PCMCIA.SYS file where Windows NT couldn’t shut down correctly on some computers that had PCMCIA devices installed. For Windows NT 3.51 SP5. This issue was fixed in NT 4.0 SP2. i386 (75 KB) Alpha (116 KB) MIPS (102 KB) PowerPC (86 KB) Readme (3 KB)

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PostScript Update – Resolves an issue replacing the PSCRIPT.DLL file where complex-filled shapes (gradients, texture, etc.) from Office 97 documents may not print correctly on some PostScript printers. For Windows NT 3.51 SP5. i386 (99 KB) Alpha (133 KB) MIPS (120 KB) PowerPC (116 KB) Readme (3 KB) Install Readme (1 KB)

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Remote Procedure Call Update – Resolves a couple of issues replacing RPCLTS3.DLL where instances of telnet and Exchange Server 4.0 could cause problems relating to high CPU usage. For Windows NT 3.51 SP5. This issue was fixed in NT 4.0 SP3. i386 (57 KB) Alpha (86 KB) MIPS (76 KB) PowerPC (61 KB) Telnet Readme (3 KB) Exchange Server 4.0 Readme (3 KB)

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Services for Macintosh Update – Replaces SFMSRV.SYS to resolve an issue from copying a file from an Apple Macintosh computer onto a Macintosh volume on the NT server. For Windows NT 3.51 Server SP5. This issue was fixed in NT 4.0 Server SP3. i386 (131 KB) Alpha (209 KB) MIPS (190 KB) PowerPC (161 KB) Readme (3 KB)

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Teardrop Attack Fix – Teardrop was the name of an attack that caused Windows NT to crash after receiving a number of deliberately corrupted UDP packets from the TCP/IP connection. This replaces TCPIP.SYS and is the latest based on time stamp amongst NT 3.51 updates. For Windows NT 3.51 SP5. This issue was fixed in NT 4.0 SP4. i386 (127 KB) Alpha (216 KB) Readme (5 KB)

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Toshiba Fail to Boot Fix – A fix predominantly towards Toshiba laptops where upon shutting down corrupts the last sectors being written to the hard disk. Upon booting again, Windows NT may fail to start. The cause of this was relating to the hard disk itself, not Windows NT. This updates the NTFS.SYS driver. For Windows NT 3.51 SP5. This issue was fixed in NT 4.0 SP2. i386 (225 KB) Alpha (351 KB) MIPS (352 KB) PowerPC (298 KB) Readme (3 KB)

downloadWindows NT 3.1 Resource Kit – Restributable files of what came on CD with the resource kit by Microsoft Press. A small group of admin utilities. Once the files have extracted run INSTALL.EXE to install correctly. i386 (4 MB) Alpha (6 MB) MIPS (4.7 MB) POSIX Source Code (804 KB) Optimizing Windows NT 3.1 – Performance Tools (2 MB)

downloadWindows NT 3.1 Service Pack 3 – The last major service pack for Windows NT 3.1. This resolved well over 200 bugs. Previous service packs are not required for installation. (11 MB) CD ISO also available for easy installation.

downloadWindows NT 3.5 Service Pack 3 – Self-extracting files to create eight floppy disks for installing the service pack. Sourced from Microsoft’s defunct FTP server. (10 MB)

downloadWindows NT 3.51 Service Pack 5 – The last major service pack for Windows NT 3.51. This resolved well over 200 bugs. Previous service packs are not required for installation. (12.5 MB)

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Year 2000 Miscellaneous Fixes – Several issues relating to the year 2000 were corrected, such as not displaying correct dates, not recognising it was a leap year, etc. Some individual issues were only found in NT 3.51, while others also affected NT 4.0 and where fixed in a service pack. For Windows NT 3.51 SP5. i386 (2 MB) Alpha (2 MB) Readme (16 KB)

downloadYear 2000 Net User Command Fix – An issue would occur when using the NET USER command with the /TIMES switch, seeing the year 2000 as an illegal date range. For Windows NT 3.51 SP5. Also affected NT 4.0 and 4.0 Terminal Server though both were resolved in a service pack. i386 (184 KB) Alpha (244 KB) Readme (8 KB)

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