I have the same problem: I installed the trial version 9.6.3 on a Win Server 2012 R2, receiving events from nxlog clients.
I tested with two clients (win7 and win10): most events are lost, sometimes (about every 5 minutes) one message is received by the server.
This is nxlog's log, it seems there are no errors in the tcp connection, but is restablished every second
Testing with Kiwi Syslog Message Generator, it always says "TCP session remotely disconnected"
I uninstalled version 9.6.3 and installed older version 9.4.1: both Message Generator and Nxlog client work perfectly .
Any suggestions are welcome...
Thank you
