NTP for Windows NT/2000/XP/2003/Vista

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Note: Der current setup program ntp-4.2.8p15a supersedes ntp-4.2.8p15 and ntp-4.2.8p15-v2.
It includes preliminary patches for some minor vulnerabilities, see
this KB page.
This package also includes the current openSSL libcrypto DLL v1.1.1t.
ntp-4.2.8p15a-win32-setup.exe
(4.25 MB)
19. April 2023
ntp-4.2.8p15a-win32-setup.exe.sha256sum
2023-04-13
Statement on NTP Vulnerabilities Reported on April 12, 2023
2023-03-23
Meinberg Security Advisory: [MBGSA-2023.02] LANTIME-Firmware V7.06.013
2023-03-06
Make the Best of your Meinberg Product with the All-New Meinberg Customer Portal
2023-01-26
End-of-Sales Announcement - GPS180DHS and GPS180DAHS

Home Software Download
NTP info page as well as in our
knowledge base articles.
The Meinberg NTP package provides a GUI setup program for Windows which installs the NTP service and associated executable programs that have been compiled from the original public NTP source code available at the
The GUI installer also contains the corresponding HTML based NTP documentation, as well as the
libcrypto DLL from the
OpenSSL project,
which is required to create or check signatures of the NTP network packets, if the symmetric or public key authentication feature is used.
NTP package for current Windows versions (XP and later), with IPv6 support
Outdated NTP package for Windows NT, Windows 2000, and newer, IPv4 only
If you have any questions or feedback, please contact
NTP for current Windows versions (Windows XP and later), with IPv6 support
The current stable NTP version can be used with current 32 and 64 bit Windows versions (Windows XP and newer).
Alternatively, there's an older version available which can also be used on Windows 2000
or even Windows NT.
Note: Der current setup program ntp-4.2.8p15-v2 is based on the same source code from the NTP project as
the previous version ntp-4.2.8p15, so the executable programs are basically the same as provided by the previous
version. However, there are some changes in the setup program:
When installing the service, the path to the executable program entered in the registry is placed
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Note: The current stable version ntp-4.2.8p15 provides a minor security patch and some enhancements.
This package also includes the current openSSL DLL v1.1.1g.
ntp-4.2.8p15-win32-setup.exe
3 July 2020
ntp-4.2.8p15-win32-setup.exe.sha512sum
2020-06-10
Virtual innovation Showcase - New Synchronization Solutions for the Professional Broadcasting Industry
2020-05-20
The IMS-Series is extended by a new Chassis-Type
2020-03-17

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Note: The current stable version ntp-4.2.8p14 provides a minor security patch and some enhancements.
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Note: The current stable version ntp-4.2.8p13 provides some security patches and some other minor enhancements.
This package also includes openSSL DLL v1.0.2r, which also contains some security fixes.
ntp-4.2.8p13-win32-setup.exe
2019-02-27
Meinberg to acquire Oregano Systems
2019-02-20
Meinberg GPS receivers are ready to handle the Week Number Rollover
2018-12-21
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Smart Grid Timing
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Note: The current stable version ntp-4.2.8p12 provides some security patches and some other minor enhancements.
See the
changelog
for details.
This package also includes openSSL DLL v1.0.2p, which also contains some security fixes.
ntp-4.2.8p12-win32-setup.exe
(3.81 MB)
28 August 2018
ntp-4.2.4p8@lennon-o-lpv-win32-setup.exe
(2.8 MB)
26 October 2010
Old and stable NTP-package Windows NT/2000 (IPv4 only)
2018-08-27
Meinberg presents its new microSync Series at CIGRE 2018
2018-05-29
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Note: The current stable version ntp-4.2.8p10 provides some security patches and some other minor enhancements.
This package contains openSSL DLL v1.0.2k as well, which also contains some security fixes.
ntp-4.2.8p10-win32-setup.exe
(4.15 MB)
2017-03-21
Successful Participation in the EANTC Multi Vendor Interoperability Tests
2017-02-06
Product Announcement: The New Time Code Receiver Generation
2017-01-06
Save the Date - Meinberg Courses and Workshops in 2017
2016-12-15
The Leap Second is Coming - Are You Ready?

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Note: The current stable version ntp-4.2.8p9 provides some security patches and some other minor enhancements.
This package contains openSSL DLL v1.0.1u as well, which also contains some security fixes.
It is explicitly recommended to upgrade earlier installations to this version.
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IMS - Modular Synchronization
IMS Rackmount Systems
IMS Railmount Systems
IMS Modules
IEEE-1588 Grandmaster Clocks
IEEE-1588 Slave Clocks
PC Clocks (PCI / USB)
PCI-Express Clocks
PCI / PCIX Radio Clocks
USB Clocks
GPS / GLONASS Systems
GPS / GLONASS PCI & PCIe Clocks
GPS / GLONASS Appliances
GPS / GLONASS Modules
DCF77 / WWVB / MSF Systems
AM PCI / USB Clocks
AM Receivers
AM Modules
IRIG Time Code Systems
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The Meinberg NTP packages provide a GUI installer for Windows which installs the NTP service and associated executable programs
which have been compiled from the original public NTP source code available at the
NTP download page at ntp.org.
The GUI installer also contains the corresponding HTML based NTP documentation, plus an
OpenSSL DLL
required by the NTP service to support symmetric or public key authentication.
Unattended installation is also supported. Please see the
NTP Installer README
for help on how to use the installer.
Actually there a different stable NTP versions provided, plus some additional information:
NTP for Windows XP and newer, with IPv6 support
NTP for Windows NT and 2000, IPv4 only
External Web Links
NTP Cheat Sheet / Short Reference
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