Problem: Domain Time is blocked by a firewall
KB1001.033 – 1 October 2014
If you are using Domain Time to obtain the time from external time sources, you may experience problems if you have a firewall in place...
Problem: Firewall or proxy authentication fails
KB1001.034 – 3 September 2003
Your firewall or proxy server may allow traffic when you are testing, but not when Domain Time is running as a service...
FAQ: How to upgrade to a newer version of a Greyware product
KB1001.501 – 23 May 2002
If you don't have an Greyware account set up, but have purchased a license for our software in...
FAQ: Finding and choosing a public time server
KB2001.001 – 23 May 2002
If you are using a public time server as your trusted time source, you need to pick...
Problem: The Windows Time (W32Time) service turns itself back on
KB2001.002 – 11 Oct 2019
If you have set the W32Time service to NoSync, it may switch back to NT5DS or NTP...
FAQ: How can I enable NTP or DT2 broadcasts in Domain Time?
KB2001.708 – 11 June 2015
Domain Time supports NTP and DT2 broadcasts, both sending and receiving...
Problem: "[Control] Access Denied" using Domain Time II Manager, Client, Server, Update Server, or Audit Server
KB2001.728 – 4 November 2021
When you try to control a remote machine using Domain Time II Manager, you get 'Control Access Denied' and all of the buttons are grayed out. Or you receive 'Access Denied' messages using Update Server or Audit Server...
FAQ: What are 'advisory signals' and 'cascade signals' and how do they work?
KB2001.809 – 12 June 2015
Cascade and advisory signals are UDP packets sent to port 9909...
Problem: Domain Time system tray icon changes from the Domain Time logo to a flashing clock
KB2001.924 – 2 February 2002
The Domain Time system tray icon changes from the Domain Time logo to a flashing clock if a problem is detected...
FAQ: How to specify the source port for DT2, NTP, or TIME/ITP
KB2001.A04 – 12 June 2015
Domain Time II will use any available ephemeral port as the source port when sending requests, unless...
Problem: The Windows Time (W32Time) service generates Event ID 49 and won't start
KB2002.101 – 12 June 2015
The Event Viewer may show Event ID 49 from the W32Time service, saying 'the port may be in use'...
FAQ: How do I change the service log filename or path?
KB2002.329 – 7 February 2013
Change the default filename or location of the service text log...
Problem: "Could not send level 1 cascade trigger to .... Error 10054: connection reset by peer"
KB2002.502 – 12 June 2015
When you examine the Domain Time II Server logs, you see the entry 'Could not send level 1 cascade trigger to ...'...
FAQ: How do I control when Domain Time II overrides the maximum disparity setting?
KB2002.522 – 23 May 2002
Domain Time overrides the maximum disparity when it has reason to doubt its own time...
Problem: Variance Reports from Domain Time II Manager or Monitor Service do not include all machines
KB2003.806 – 23 May 2002
Variance reports from Domain Time II Manager or Monitor Service do not include all machines...
Problem: Domain Password installed but not responding on Windows Server using IIS
KB2004.1021 – 27 April 2005
Domain Password installed but not responding on Windows Server using IIS...
Problem: Windows Time clients do not synchronize with Windows domain controller running Domain Time II
KB2005.1104 – 4 November 2010
Windows Time clients do not synchronize with domain controller running Domain Time II...
FAQ: How do changes in Daylight Saving Time or time zones affect Domain Time?
KB2007.103 – 10 November 2008
How Domain Time relates to Daylight Saving Time...
FAQ: How do I configure Domain Time II on a virtual machine?
KB2007.418 – 17 September 2013
Best practices for using Domain Time II on virtual machines such as VMware, Hyper-V, etc...
Problem: Systems using AMD processors experience excessive time drift or jumps
KB2007.817 – 31 August 2007
Machines running AMD processors may have large clock drift or show large time corrections in the logs...
Problem: A dialog pops up indicating "Security Warning," "The publisher could not be verified," "Unknown Publisher," or other warning when a program starts
KB2008.122 – 10 November 2010
Loading a system tray icon during user log in or manually launching a program executable causes a security dialog pop-up...
FAQ: How to configure Domain Time Client, Server, or DTLinux when making a cloned OS image
KB2008.909 – 07 Jan 2021
How to configure Domain Time Client, Server, or DTLinux when making a cloned OS image...
Problem: You receive an 'Error 6: The handle is invalid' message when installing or configuring Domain Time remotely on Windows XP/2003"
KB2010.1104 – 4 November 2010
You receive an 'Error 6: The handle is invalid' message when installing or configuring Domain Time remotely on Windows XP/2003...
Problem: A fully-specified IPv6 address entered into a field on a Domain Time II v5.x dialog is not parsed or saved correctly."
KB2011.309 – 9 March 2011
A fully-specified IPv6 address entered into a field on a Domain Time dialog is not parsed or saved correctly. The actual address used may appear truncated or have nodes missing...
FAQ: How does Domain Time handle leap years and leap seconds?
KB2012.125 – 3 June 2015
An explanation of leap year and leap second handling...
Problem: Time sync with Domain Time Server fails with the logged error "The digital signature of the object did not verify."
KB2012.626 – 6 June 2012
Domain Time Servers or Clients using packet authentication cannot communicate and time is not synchronized...
ADVISORY: Possible time issue due to erroneous leap second advertisement
KB2012.717 – 18 July 2012
Problems from uncanceled leap second advertisements by NTP/PTPv2 Servers and how to resolve them...
Problem: Clock drift increases over time (runaway clock), even though Domain Time appears to be correcting the clock properly
KB2013.805 – 8 May 2013
Clock training adjustments get progressively larger until the Phase Adjustment maximum is reached...
FAQ: Is Domain Time susceptible to ntpd vulnerabilities or being used in NTP amplification attacks?
KB2014.129 – 11 Dec 2019
A discussion of NTP-specific denial of service attacks...
FAQ: How to move Domain Time II Server, Manager, and Audit Server to a new machine
KB2014.916 – 23 April 2018
Instructions on how to move Domain Time Server, Manager, and Audit Server components to a new machine...
Problem: You receive 'Sync trigger detected - Clock Change: WM_TIMECHANGE broadcast detected' messages in your logs
KB2015.401 – 1 April 2015
Domain Time Server or Client logs report "Sync trigger detected - Clock Change: WM_TIMECHANGE broadcast detected...
FAQ: Common errors, warnings, and notifications when using Domain Time
KB2015.729 – 24 Sep 2019
An brief explanation of the most common error/warning/info messages...
FAQ: Installation and Limitations of Domain Time II on Windows Nano Server
KB2017.111 – 11 January 2017
Describes the installation process and operating limitations of Domain Time on Windows Nano Server...
Problem: Domain Time Audit Server's expand binary sync log database files to text files function stops working. Error 223 may be logged.
KB2018.0331 – 31 March 2018
Domain Time Audit Server's binary to text conversion function stops working. Error 223 may be logged...
Windows logs System event error 21 'The time service has no source of accurate time' when Client is set to NoSync mode.
KB2018.1016 – 16 Oct 2018
When Domain Time's Windows Time mode is set to NoSync, Windows may report error 21 from the Time-Service...
FAQ: Domain Time and PTP v2.1 Authentication
KB2019.331 – 21 Feb 2026
An overview of how Domain Time implements the IEEE 1588 2008 v2.1 authentication mechanisms...
FAQ: Domain Time and NDIS Software Timestamps
KB2019.708 – 07 July 2019
An overview of how Domain Time implements Microsoft's NDIS software Timestamps...
Domain Time loses PTP sync and reports its state as faulty.
KB2019.915 – 20 Jul 2021
If Domain Time detects a duplicate PTP clockIdentity, it will disable itself and report as Faulty...
Problem: You receive 'Sync trigger detected - New IP Address' or 'NewIPAddress' messages in your logs
KB2020.831 – 1 April 2015
Domain Time Server or Client logs report "Sync trigger detected - New IP Address...
FAQ: How to register Greyware software
KB2021.119 – 19 January 2021
How to register Greyware software and apply license keys...
FAQ: Is Domain Time susceptible to Log4J vulnerabilities?
KB2021.1220 – 20 Dec 2021
Domain Time is not susceptible to Log4J exploits...
FAQ: Determining TAI-UTC Offset options
KB2021.328 – 28 Mar 2021
How to determine what TAI-UTC offset setting is correct based on what the master is advertising...
FAQ: Potential vulnerability in Check for Updates function in Domain Time
KB2021.409 – 8 Apr 2021
Potential vulnerability in Check for Updates function in Domain Time prior to v5.2.b.20210331...
Problem: You receive 'Could not get time: error 87: The parameter is incorrect' or 'Unable to fetch machine RID' messages in your Slave logs
KB2022.1018 – 1 April 2015
Domain Time Slave Server logs report "Could not get time: error 87: The parameter is incorrect...
FAQ: Best Synchronization Practices
KB2026.204 – 04 February 2026
Best practices for maintaining good synchronization...
FAQ: Snapdragon Arm64 Support
KB2026.220 – 02 March 2026
Snapdragon Arm64 Support on Windows...
