Forum Discussion
Defender for Identity sensor high severity alert
MDI sensor is generating a high severity alert stating " A health issue occurred Sensor received more windows events than they can process resulting in some events not being analyzed While I check...
EliOfek
Microsoft
MicrosoftCloud0009 Usually the problem will be lack of resources, or high percentage of NNR failure that slows the sensor down too much.
Please make sure you have ran the sizing tool, and the machine is up to spec.
If it looks OK, please contact support as they will need much more data to know exactly what happened.