We've had a Windows 2008 (x64) Server running as a Terminal Server for several months now without a problem. Last night I installed some Windows Updates and now our users are being periodically disconnected throughout the day. I looked through the Event Viewer but found nothing out of the ordinary. I setup a ping to that server and let it run for a while. Eventually I got a handful of missed packets before it all went back to normal. I checked the System Event Log and at the exact time my pings dropped I got EventID 37 which looked something like this.
The time provider NtpClient is currently receiving valid time data from xxxx.xxxxxx.xxx (ntp.d|0.0.0.0:123->192.168.0.9:123).
This really didn't sound like a problem but I went ahead and filtered the System Log for this particular event. What I found was interesting. Before I installed the Windows Updates, this event came up once every few days. Sometimes, however, it would go weeks or even a month be occurrences. Since the update, this message gets logged every hour.
I've already tried rebooting the server but that didn't help. No hardware changes have been made. I'm going to see about rolling back the recent updates. We also have another similar server that's running SQL 2008 that I haven't checked yet. Any ideas on what is causing this?