I have times when different machines on my network become very sluggish. Sometimes it looks as if a server is not responding (ie Outlook says, "trying to retrieve info from server") yet the server is at almost 0% cpu, plenty of memory, and no network bandwidth is being used to speak of (<1%).
This and the other servers are virtual servers on a HyperV server.
Individual wires from the patch panel to the computers test to Cat5e standards.
What can I do to trouble shoot this problem?