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DNS Server keeps losing its Forwarder configuration randomly RRS feed

  • Question

  • I've come across a weird issue and wondering if anyone from the TechNet community has seen this before elsewhere and knows what could be the issue.

    We have 4 Server 2012 R2 Std DNS servers in our environment. Recently, after updating the DNS forwarder IP address from old one to a new IP address, we're finding that all of the DNS servers randomly lose their forwarder IP address config , hence setting the value to <null/empty>.

    We have a workaround in place by running a PowerShell script that runs every 5 minutes to check the correct DNS forwarder config on all DNS servers and updates it if incorrect.

    Things we have checked already and still didn't find what's causing this:

    - DNS related event logs.

    - Enabled and reviewed DNS auditing/debug logs

    - Registry permissions.

    - No scheduled tasks or scripts that might be updating/resetting the config accidentally

    - No fixed pattern/frequency as to when a particular DNS server will lose its forwarder config.

    Sorry about the long post but would really appreciate any clues if someone has come across an issue like this before.

    Saturday, September 9, 2017 5:01 AM

All replies

  • Hi,

    Does you install any other third-party software?

    Please run anti-virus software for full disk scan.

    Best Regards,
    Frank


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    Monday, September 11, 2017 8:34 AM
  • Hi,

    Just checking in to see if the information provided was helpful. Please let us know if you would like further assistance.

    Best Regards,
    Frank

    Please remember to mark the replies as answers if they help and unmark them if they provide no help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Wednesday, September 13, 2017 9:42 AM
  • Hi,

    Was your issue resolved?

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    Best Regards,
    Frank

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    Tuesday, September 19, 2017 3:24 PM