This article was previously published under Q330574
This article has been archived. It is offered "as is" and will no longer be updated.
You may experience intermittent name resolution issues on a Windows 2000-based computer that is configured as a secondary Domain Name System (DNS) server. The server may resolve some records but not others. When this issue occurs, the following events are logged to the DNS event log:
Event ID: 5501 Source: DNS Type: Warning Description: DNS Server encountered bad packet from IP Address. Packet processing leads beyond packet length.
Event ID: 6524 Source: DNS Type: Error Description: Invalid response from master DNS server at IPAddress during attempted zone transfer of zone. Check DNSServer and ensure that it is authoritative for this zone. This can be done by viewing or updating the list of authoritative servers for the zone. When using the DNS console, select zone ZoneName Properties at server IPAddress and click the Name Servers tab. If needed, you can add or update this server in the list there. As an alternative solution, you could also modify settings in the Zone Transfer tab to allow transfer of the zone to this and other DNS servers, where DNSServer is the name of your DNS server, IPAddress is the IP address of your master DNS server, and ZoneName is the name of your DNS zone.
This problem may occur if the zone transfer times out because of the load on the Windows 2000 DNS server that is acting as the primary for the zone. The primary server is not correctly handling canceled zone transfer requests. Therefore, it sends multiple zone transfer messages to the same socket, and the secondary server loads an incomplete copy of the zone.
Apply the following hotfix to Windows 2000 DNS servers that are acting as standard primaries for one or more zones.
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:
260910 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 ---------------------------------------------------- 15-Nov-2002 16:26 5.0.2195.6130 325,904 Dns.exe
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:
265173 The Datacenter Program and Windows 2000 Datacenter Server Product