Specialist NTP time servers are available that can receive a reliable time source via the GPS signal or specialist radio transmissions that get their time from atomic clocks. If you wish to configure Windows XP to operate as a time server then first thing is to locate the Windows Time subkey.
Note: editing your system registry can cause problems with your system. It is advisable to back up your system before editing the registry. Why I am seeing the message no clock info block defined by Time Service? The program was runing OK. I am loging as administrtor. Use have is administrator and guest. I guess time service should not be bind with a specific USER but there is a option to unregister and regitser the time service, Its removes all the instances and recreates again.
Time is applied on the system not on the user or profile, is that system is part of the domain or work group? MVP-Directory Services. Any how I will contact to GPS software tech support.
This does not appear to be a built-in Windows time service issue - you will need to resolve this with the vendor of the software you are using Office Office Exchange Server.
My suggestion is and this is how I used to do it we had a server welllllll The clients using the reg keys from Haddicus' link then hook into the local NTP server with your clients. It worked like a charm for the rest of the 2 years I continued to work there after we had set it up.
Setting up the announce flags should prevent the system from falling down. If you don't have an external source you could be in grief, I would really, really suggest making a connection to an external source.
The reason that we have external sources instead of relying on the CMOS chips is because they fluctuate with power spikes even normal ones that come through surge protected powerboards and shiny, top end power supplies. The other alternative is a standalone time server. You can install an aerial on your roof and feed your signal to a standalone NTP server.
And apparently it's ridiculously accurate. I've never used one but I had a lecuturer at Uni profess that they were really good. Edit: Spiceworks went down and I had to copy and paste which didn't bring the quote formatting through. As far as turning on the time server, there is no need. It check the current time of the machine specified and uses that to set the clock, see below. Couldn't you just set the machines time server to the IP address of the one machine designated as authoritative?
Adjust SpecialPollInterval key in decimal, with the unit being seconds. I keep mine set to , or 24 hours. Yes, for the slaves. But that doesn't help with telling the time server to just look at its CMOS and nothing else. While there is plenty of documentation on this, something doesn't seem to make it stick.
For example, a local PDC emulator does not attempt to query numbers three or six because a domain controller does not attempt to synchronize with itself. The following table lists the queries that a domain controller makes to find a time source and the order in which the queries are made. A domain controller does not attempt to synchronize with itself. Each query returns a list of domain controllers that can be used as a time source.
Windows Time assigns each domain controller that is queried a score based on the reliability and location of the domain controller. The following table lists the scores assigned by Windows Time to each type of domain controller. When the Windows Time service determines that it has identified the domain controller with the best possible score, no more queries are made.
The scores assigned by the time service are cumulative, which means that a PDC emulator located in the same site receives a score of nine. If the root of the time service is not configured to synchronize with an external source, the internal hardware clock of the computer governs the time. Manually-specified synchronization enables you to designate a single peer or list of peers from which a computer obtains time.
If the computer is not a member of a domain, it must be manually configured to synchronize with a specified time source. A computer that is a member of a domain is configured by default to synchronize from the domain hierarchy, manually-specified synchronization is most useful for the forest root of the domain or for computers that are not joined to a domain.
Manually specifying an external NTP server to synchronize with the authoritative computer for your domain provides reliable time. However, configuring the authoritative computer for your domain to synchronize with a hardware clock is actually a better solution for providing the most accurate, secure time to your domain. Manually-specified time sources are not authenticated unless a specific time provider is written for them, and they are therefore vulnerable to attackers.
Also, if a computer synchronizes with a manually-specified source rather than its authenticating domain controller, the two computers might be out of synchronization, causing Kerberos authentication to fail. This might cause other actions requiring network authentication to fail, such as printing or file sharing. If only the forest root is configured to synchronize with an external source, all other computers within the forest remain synchronized with each other, making replay attacks difficult.
The "all available synchronization mechanisms" option is the most valuable synchronization method for users on a network. This method allows synchronization with the domain hierarchy and may also provide an alternate time source if the domain hierarchy becomes unavailable, depending on the configuration.
If the client is unable to synchronize time with the domain hierarchy, the time source automatically falls back to the time source specified by the NtpServer setting. This method of synchronization is most likely to provide accurate time to clients. There are certain situations in which you will want to stop a computer from synchronizing its time. For example, if a computer attempts to synchronize from a time source on the Internet or from another site over a WAN by means of a dial-up connection, it can incur costly telephone charges.
When you disable synchronization on that computer, you prevent the computer from attempting to access a time source over a dial-up connection. You can also disable synchronization to prevent the generation of errors in the event log. Each time a computer attempts to synchronize with a time source that is unavailable, it generates an error in the Event Log.
If a time source is taken off of the network for scheduled maintenance and you do not intend to reconfigure the client to synchronize from another source, you can disable synchronization on the client to prevent it from attempting synchronization while the time server is unavailable.
It is useful to disable synchronization on the computer that is designated as the root of the synchronization network. This indicates that the root computer trusts its local clock. If the root of the synchronization hierarchy is not set to NoSync and if it is unable to synchronize with another time source, clients do not accept the packet that this computer sends out because its time cannot be trusted.
The only time servers that are trusted by clients even if they have not synchronized with another time source are those that have been identified by the client as reliable time servers. The Windows Time service W32Time can be completely disabled. If you choose to implement a third-party time synchronization product that uses NTP, you must disable the Windows Time service. The Windows Time service communicates on a network to identify reliable time sources, obtain time information, and provide time information to other computers.
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