Metrics unknown or wrong values

The performance counters on the machine are returning bogus values and that’s why it returns an “unknown” state.

https://support.microsoft.com/en-us/help/2554336/how-to-manually-rebuild-performance-counters-for-windows-server-2008-6

The fix is to run the following command on the machine in and admin command prompt:

 cd c:\windows\system32
lodctr /R
cd c:\windows\sysWOW64
lodctr /R

After that the machine should start returning proper metrics and you shouldn’t receive those alerts

If you still have trouble, try running our system metrics tool on that system and see if it finds any problems: https://remotetopc.com/cc-help-page/metrics-not-showing/