Forum Discussion
RNalivaika
Jan 26, 2021Iron Contributor
Low success rate of active name resolution
New install of Azure ATP Sensor on Domain Controller getting warning "Low success rate of active name resolution". Corp-DC1, failed more than 90% of the time when doing active resolution using Ne...
- Jan 26, 2021
RNalivaika
Did you make sure the ports are open as described inhttps://docs.microsoft.com/en-us/defender-for-identity/prerequisites#ports
?
If yes, open a support case, so they can increase the trace level on your workspace to tell you more about when it fails.
RNalivaika
Jan 27, 2021Iron Contributor
EliOfek you mean Office365 support ?
EliOfek
Microsoft
Jan 27, 2021See here:
- RNalivaikaFeb 15, 2021Iron Contributor
EliOfek MS Support provided me with a sample list of IP adresses failing NNR and we were able to make the necessary changes on the network, so this helped.
- RNalivaikaJan 27, 2021Iron ContributorI will try that, thank you!