When the monitor of a device performs its first test after restarting, it caches all the counter and [Winperf] device names to improve the bandwidth usage for all subsequent tests performed against the device.
This can be a problem if the user installs a new piece of software on the monitored machine that publishes additional performance counters, after Network Monitor has tested a Windows performance monitor against it. The problem manifests itself as "missing counters" when Network Monitor enumerates the counters, but the counters are visible in the perfmon.exe
tool.
To reset the cache the user needs to open up the Network Monitor System admin console from the Tools menu. The user needs to be system admin to see the menu entry. Issue the following command:
clear-counter-cache <device>
OBJECT_NAME is the exact name of the device that is having its cache reset.