Event ID 27 "Network link is disconnected"?

I began having intermittent wired network connection issues after upgrading to Windows 8.1, and they seem to be getting worse. The issue manifests as the network connection becoming unavailable for a few seconds (3-5) and coming back online. When this happens, the network's icon in the control panel becomes greyed out with a red X and the label says "Network cable unplugged". Any active network connections are interrupted and/or fail - think file transmissions, interrupted video streams, degraded skype calls, etc.

This seems to happen as frequently as once every 20 seconds for a few minutes at a time and as infrequently as once every 20 minutes. The frequency "seems to" increase whenever the network is under heavier load (ie, copying files, streaming audio / video, playing games), althought that could be my own bias because I'm paying closer attention.

When checking the System event logs, there's an entry with Event ID 27 that says "

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My system is a custom built computer with an Intel i7 CPU, 960GB SSD and 24 gigs of RAM.

Motherboard: ASUS Rampage III Extreme (LGA 1366)
Embedded NIC: Intel(R) 82567V-2 Gigabit
Driver: e1yexpress

I suspected the embedded NIC might be going bad, so I swapped it out for a new one. I installed the new NIC, disabled the embedded NIC in the motherboard's BIOS, but the problem persists with the new NIC as well.

New NIC: Intel(R) Gigabit CT Desktop Adapter
Driver: e1iexpress

I also updated the driver to the latest available from Intel's website, also to no avail. The Intel provided drivers came with a set of further diagnostics (connection, cable and hardware) which all passed successfully, though honestly this doesn't seem to be a NIC specific issue given I've had the same exact behavior on two different NICs. Only thing that seems to be consistent between the NICs is that they are Intel Gigabit controllers.

I then suspected a faulty cable, so I tried changing the ethernet cables (CAT5e for a CAT6) as well as using different ports on the switch (to one's that have been working with other devices) but that didn't yield any results either.

I also have two other devices connected to the same gigabyte switch (Linksys SD2005):  a MacBook Pro laptop and a Synology NAS server (Linux based), neither of which are displaying this behavior. 

I'm at my wit's end. Any ideas?

After looking at the event logs a bit closer, I noticed that the first instance of Event ID 27 happened on December 11th, 6:12PM -- coincidentally, almost exactly 3 hours after the following system updates:

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- Security Update for Windows 8.1 for x64-based Systems (KB2893984)

- Security Update for Windows 8.1 for x64-based Systems (KB2868626)

- Definition Update for Windows Defender - KB2267602 (Definition 1.163.1756.0)

- Update for Windows 8.1 for x64-based Systems (KB2909569)

- Update for Windows 8.1 for x64-based Systems (KB2904266)

- Update for Microsoft Camera Codec Pack for Windows 8.1 for x64-based Systems (KB2899189)

- Cumulative Security Update for Internet Explorer 11 for Windows 8.1 for x64-based Systems (KB2898785)

- Security Update for Windows 8.1 for x64-based Systems (KB2892074)

- Update for Windows 8.1 for x64-based Systems (KB2887595)

- Cumulative Security Update for ActiveX Killbits for Windows 8.1 for x64-based Systems (KB2900986)

- Update for Windows 8.1 for x64-based Systems (KB2913320)

- Update for Windows 8.1 for x64-based Systems (KB2902892)

- Security Update for Windows 8.1 for x64-based Systems (KB2876331)

- Security Update for Windows 8.1 for x64-based Systems (KB2862152)

- Update for Windows 8.1 for x64-based Systems (KB2913152)

- Security Update for Internet Explorer Flash Player for Windows 8.1 for x64-based Systems (KB2907997)

- Security Update for Windows 8.1 for x64-based Systems (KB2893294)

- Update for Windows 8.1 for x64-based Systems (KB2884846)

Does that not seem like a little too much of a coincidence? Either way, I've already updated all of my network drivers, so if something did slip in during that update, how would I go about isolating it? I've been keeping up with other updates since and rolling back to that point seems impractical.

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It turns out the updates above may have been an unlucky coincidence and nothing but a red herring.

I was able to replicate the issue by using an Ubuntu 12.04 Live CD and inspecting the system logs for a similar pattern. Here's what I found:

ubuntu@ubuntu:~$ tailf -n 20 /var/log/syslog | grep eth0
Mar 12 20:30:12 ubuntu NetworkManager[2062]:

Seems like that pretty much irrefutably rules out any software / driver issues related to Windows. Must be some other issue related to either the network or the network cards I'm using.

I'll close this thread as it no longer is applicable to the Microsoft community.

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I am finding that the Ethernet port fails randomly (once every hour)  in this 8460p laptop

and usually will resume operation after 20 or 21 seconds, according to the

Windows 7 64 management system logs information.

Is this caused by a permanent hardware failure on the motherboard,

or could a software configuration or e1cexpress driver version bug be at fault ?

------------------------------------------------------

e.g.

10/28/2015 10:48:11 AM   Warning:  Intel(R) 82579LM Gigabit Network Connection

Network link is disconnected.    Source: e1cexpress

10/28/2015 10:48:32 AM   Information:  Intel(R) 82579LM Gigabit Network Connection

Network link has been established at 100Mbps full duplex.  Source: e1cexpress

-------------------------------------------------------

Embedded Eng

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---------------------------------------Updated March 20, 2017-----------------------------------------------

I have solved this problem with only a new network CABLE..... It is because before or after I give my PC to ASUS, the cable may broken.

SO, just check your HARDWARE if there is any problem. And do some experiments with another one if you suspect that this is the broken HARDWARE. I bought a individual network adapter, a new router and a new cable.
Hope you can solve this problem all. And I hope we will never meet problem like this ever again.

I'm having the same issue as the original poster... My issue, as I remember, began when the engineers from the authorized center of ASUS downgraded my BIOS. And it is randomly too. It happens mostly when I playing games. I also tried newer drivers, but it seems the driver from the motherboard support page is the best...

John, could you come back and tell us how you fix it? I want to solve this so badly... Pls.

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John, I am having the exact problem and have read on the web, something to do with SIPS and an update from MS that should not be installed. Mine has same symptoms as yours. Intel board, Z68 chip set. Mine has something to do with Intel Gigabit Network Connection. Please advise me if you find a solution to this issue.

John, just downloaded and installed Intel chip set drivers and appears to be working OK, I'll update you later.

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TP Bailey

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Try cleaning the metal leads inside the RJ-45 Ethernet connector

lightly, with a dry cloth.

I am pretty sure that cleared my problem -- 10 second fix.

Embedded Eng

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Last updated April 22, 2025 Views 178,854 Applies to: