In Windows 7, under IPv4 Properties, DNS server addresses once added can no longer be changed

In Windows 7, under IPv4 Properties I had entered specific DNS server addresses, instead of obtaining them via DHCP.  Now when I try to select "Obtain DNS server address automatically", this setting is not retained, but keeps changing back to the specific addresses, usually after several minutes.

No matter what I do, I cannot get rid of the specific settings.  Even if I overwrite the specific addresses with different ones, the original DNS server addresses keep coming back.  I have tried cleaning the registry, but even this has not helped.  It seems that the addresses are being held somewhere in memory and then re-applied every few minutes. 
Ok, I solved my own problem.  The DNS entries were being created by the DynDNS Updater.  Once I disabled the " Internet Guide on this PC" in the Advanced configuration, the problem disappeared. 

If anyone has the same problem with phantom DNS entries ( and that keep reappearing, check if DynDNS Updater is doing this.

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Question Info

Last updated April 17, 2019 Views 3,031 Applies to: