The Microsoft DHCP service uses a fixed TTL value of 900 seconds when it performs DNS dynamic update protocol registrations on behalf of clients.
Service Pack Information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
How to Obtain the Latest Windows 2000 Service Pack
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix. Note
If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note
The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone
tab in the Date and Time tool in Control Panel.
Date Time Version Size File name
23-Oct-2002 17:27 5.0.2195.6101 271,120 Dhcpssvc.dll
To Configure the TTL ValueWARNING
: If you use Registry Editor incorrectly, you may cause serious problems that may
require you to reinstall your operating system. Microsoft cannot guarantee that you can solve
problems that result from using Registry Editor incorrectly. Use Registry Editor at your own
A new feature has been introduced with this fix. You can use this feature to configure the TTL value in the registry.
- Click Start, click Run, type regedit.exe, and then click OK.
- Locate and then click the following key:
- Double-click the DynamicDNSTimeToLive value.
NOTE: If this value does not exist, create it as a DWORD value.
- Set the DynamicDNSTimeToLive value to the TTL value that you want to use. Set the value in seconds (for example, for a value of 20 minutes, set the value to 1200).
- Click OK.
- Quit Registry Editor. The new value takes effect the next time that the DHCP service is started.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below
to view the article in the Microsoft Knowledge Base:
The Datacenter Program and Windows 2000 Datacenter Server Product