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Thread: DNS Warning ID 4521 and ID 9999

  1. #1
    Andrea Caldarone Guest

    DNS Warning ID 4521 and ID 9999

    Hi all,

    I've 4 domain controllers, they are also DNS server with one ad integrated
    forward lookup zone. Two DC are Windows 2003 R2 and the other two are
    Windows 2000 Server SP4. The event log of the DNS is filled every few minuts
    of two warnings:

    ID 4521
    The DNS server encountered error 9002 attempting to load zone . from Active
    Directory. The DNS server will attempt to load this zone again on the next
    timeout cycle. This can be caused by high Active Directory load and may be a
    transient condition.

    ID 9999
    The DNS server has encountered numerous run-time events. To determine the
    initial cause of these run-time events, examine the DNS server event log
    entries that preceded these run-time events. The data is the number of
    events that have been suppressed in the last 60 minute interval.

    Thanks


  2. #2
    Kevin D. Goodknecht Sr. [MVP] Guest

    Re: DNS Warning ID 4521 and ID 9999

    Read inline please.

    In news:A4A8CAE4-BA9C-40E3-B82B-E452470A8AD2@microsoft.com,
    Andrea Caldarone <andrea.caldarone@poste.it> typed:
    > Hi all,
    >
    > I've 4 domain controllers, they are also DNS server with one ad
    > integrated forward lookup zone. Two DC are Windows 2003 R2 and the
    > other two are Windows 2000 Server SP4. The event log of the DNS is
    > filled every few minuts of two warnings:
    >
    > ID 4521
    > The DNS server encountered error 9002 attempting to load zone . from
    > Active Directory. The DNS server will attempt to load this zone again
    > on the next timeout cycle. This can be caused by high Active
    > Directory load and may be a transient condition.
    >
    > ID 9999
    > The DNS server has encountered numerous run-time events. To determine
    > the initial cause of these run-time events, examine the DNS server
    > event log entries that preceded these run-time events. The data is
    > the number of events that have been suppressed in the last 60 minute
    > interval.
    >
    > Thanks



    Here you go, you have to create the . zone as ADI zone, then change it to
    standard primary and delete it.

    http://www.eventid.net/display.asp?e...ce=DNS&phase=1

    --
    Best regards,
    Kevin D. Goodknecht Sr. [MVP]
    Hope This Helps

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  3. #3
    Andrea Caldarone Guest

    Re: DNS Warning ID 4521 and ID 9999

    > Here you go, you have to create the . zone as ADI zone, then change it to
    > standard primary and delete it.
    >
    > http://www.eventid.net/display.asp?e...ce=DNS&phase=1
    >
    > --
    > Best regards,
    > Kevin D. Goodknecht Sr. [MVP]
    > Hope This Helps
    >


    Hi Kevin, and thank you for the answer. I've some extra questions:

    When I perform the sequence:
    1) create the "." zone as active directory integrated
    2) convert it to standard primary zone
    3) delete the zone

    have I to wait some time between each step?



  4. #4
    Kevin D. Goodknecht Sr. [MVP] Guest

    Re: DNS Warning ID 4521 and ID 9999

    Read inline please.

    In news:6D44D0FE-3A16-4EEF-AF2D-0B483195454F@microsoft.com,
    Andrea Caldarone <andrea.caldarone@poste.it> typed:
    >> Here you go, you have to create the . zone as ADI zone, then change
    >> it to standard primary and delete it.
    >>
    >> http://www.eventid.net/display.asp?e...ce=DNS&phase=1
    >>
    >> --
    >> Best regards,
    >> Kevin D. Goodknecht Sr. [MVP]
    >> Hope This Helps
    >>

    >
    > Hi Kevin, and thank you for the answer. I've some extra questions:
    >
    > When I perform the sequence:
    > 1) create the "." zone as active directory integrated
    > 2) convert it to standard primary zone
    > 3) delete the zone
    >
    > have I to wait some time between each step?


    Not really, but if you aren't sure, you can wait until it replicates. When
    you create the zone, it will overwrite the zone data in AD, when you change
    it to standard Primary, it changes the registry and removes it from AD. Then
    you only need to delete the zone, so DNS can resolve names using root hints.

    --
    Best regards,
    Kevin D. Goodknecht Sr. [MVP]
    Hope This Helps

    ===================================
    When responding to posts, please "Reply to Group"
    via your newsreader so that others may learn and
    benefit from your issue, to respond directly to
    me remove the nospam. from my email address.
    ===================================
    http://www.lonestaramerica.com/
    http://support.wftx.us/
    http://message.wftx.us/
    ===================================
    Use Outlook Express?... Get OE_Quotefix:
    It will strip signature out and more
    http://home.in.tum.de/~jain/software/oe-quotefix/
    ===================================
    Keep a back up of your OE settings and folders
    with OEBackup:
    http://www.oehelp.com/OEBackup/Default.aspx
    ===================================



  5. #5
    rad 912 Guest

    Event ID 4521 and 9999

    Is there any problem in doing this solution? I am also encountering this problem after my AD database was corrupted. When we revive the server I have so many even error 4521 and 9999 in my DNS Event Viewer.

    I have existing DNS zones (about 10 DNS zones - forward and reverse in my DNS server. Is there any problem that may affect my existing zones.

    Thanks...

    rad912

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