We have had similar issues in the past. I found that resetting the performance counters solved the problem. Use an elevated command prompt, cd to windows\system32 and issue a lodctr /R command. Do the same in window\syswow64. Next, issue a WINMGMT.EXE /RESYNCPERF command, then reboot.
I just started looking for answers to this same question. I'm new to SolarWinds. We have a number of nodes in our environment triggering this alert. I'm able to ping the device in question from the polling engine, which is strange because failure of ICMP is supposed to be how this alert is triggered. I'll circle back here if I find some useful information.
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