Event ID - 6524

Event Id6524
SourceDNS
DescriptionInvalid response from master DNS server at <ip> during attempted zone transfer of zone <zone>. Check The DNS server at <ip> and insure 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 <zone> Properties at server <ip> 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
Event InformationCAUSE:
The Bind server is not sending back a response of type "Incremental zone transfer." This causes the transfer not to succeed because the response type must match the query for zone transfers. A later version of the beta release, T6B, is available. The incremental zone transfers behavior is corrected when you use T6B.
This problem can occur when you use the beta release of BIND 8.3, known as T5B. This version of BIND is included with FreeBSD 4.1. Therefore, this behavior can occur after you upgrade the master DNS server.

RESOLUTION:
As an alternative resolution, you can also modify settings on the Zone Transfer tab to allow transfer of the zone to this and other DNS servers. The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
Reference LinksEvent ID 6524 with DNS Incremental Zone Transfer Problem

Windows 2000 DNS Zone Transfer Fails and Logs Event ID 6524

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