Endpoint Protection-My PC is port scanning and LAN connection drops randomly.

We have Endpoint Protection running on all network pcs.

I recently discovered my own pc is port scanning other pcs and they are blocking my ip for 600 seconds.

My Endpoint detects nothing. Neither did Malwarebytes nor Spybot.

Wireshark showed my pc querying other machines but that did not tell me what is doing it.

My internet connection is steady, but at the same time my lan connection, say to a remote desktop session and exchange server, will drop for minutes then come back. All while internet stays up.

Any ideas out there?

Thanks,

Andrew