DNS forwarders Umbrella Unable to validate

[kamensky@kronovision.sk]

Hello community,

I am trying to setup Umbrella DNS as forwarders on one of our Windows servers, however validation always fails.

DNS resolving in general is working fine just the validation fails.

It is only related to Umbrella DNS servers, all the other public DNS servers are validates successfully.

See attached image.

Can you please help me to fix this?

[kamensky@kronovision.sk]

Finally problem was in our antivirus software and its feature DNS query filtering...After disabling it umbrella DNS server validation works OK.