Are you able to login to web interface? Try deleting it from there.
If not, try these commands as the zenoss user
zenpack --remove ZenPacks.zenoss.WindowsMonitor
zenpack --fetch ZenPacks.zenoss.WindowsMonitor
Are you able to login to web interface? Try deleting it from there.
If not, try these commands as the zenoss user
zenpack --remove ZenPacks.zenoss.WindowsMonitor
zenpack --fetch ZenPacks.zenoss.WindowsMonitor