After deployed a few brand new imaged Optiplex 780's to a site (Using Win7 64bit), I noticed the users were getting intermittent disconnections from their windows 2008 R2 terminal server. I investigated the event logs on the terminal server and investigated the switches. There were no errors out of the ordinary.
Upon investigation of the Optiplex 780 system logs, I noticed the following errors:
Log Name: System
Source: e1kexpress
Date:
Event ID: 35
Task Category: None
Level: Information
Keywords: Classic
User: N/A
Computer:
Description:
Intel(R) 82567LM-3 Gigabit Network Connection
Network link has been established at 10Mbps full duplex.
I checked the Dell website and there was a Urgent NIC driver update which actually had the following fix listed
"Fixes Intermittent NIC connectivity issues."
Once the driver update was applied, the issues seemed to go away.
So moral of the story... Update the NIC and Chipset drivers of your desktops and don't rely on Microsoft's default drivers.
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