Is Umbrella Roaming Client removing your DNS entries?

I ran into an interesting issue when changing the DNS settings on a Windows Server 2008 R2 server not too long ago:

Each time I tried to change the DNS settings I’d hop back into the NIC settings to review my changes and they would be gone. A few googles didn’t help much until I saw this remark from a post on the web:

Tried that too…no dice…I have found the cause and resolved the issue.  Our network is running Symantec Endpoint Protection for antivirus/malware protection.  There is a feature in version 12.1 called Sonar which protects against network intrusions.  The policy on the affected workstation was set to block DNS changes…hence the blank DNS settings when I tried to manually set them.  I changed the policy to allow DNS changes, entered the IP Subnet Gateway and DNS, rebooted, and…It is working now!  Thank you Cameron O and LemP for your assistance.

Not that it directly helped, but it reminded me that Umbrella will change the DNS settings and point them internally. Therefore, it makes sense that I wouldn’t be able to see or make DNS changes.

Solution: Stop the Umbrella service to get this to work.

Once the service was stopped I could make my changes and things were fine.

Hope this helps,

Cheers!