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The question pretty much says it all. I see all of our Windows 7 machines have a little exclamation point saying "No Internet Access", when they do indeed have access.

Our proxy is Bluecoat if that helps. I'm not the network admin, but I will try and provide any other requested info. Thanks!

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  • Talk to you network admin or helpdesk?
    – Sam Cogan
    Commented Aug 12, 2011 at 14:36
  • Yeah, they don't know either. I'm a developer, and I'm currently setting up an image for new PCs, and I would like that gone. I'd rather hear if anyone has the actual solution for it.
    – IronicMuffin
    Commented Aug 12, 2011 at 14:38
  • Your network administrators don't know how to connect your PC to your network?
    – Sam Cogan
    Commented Aug 12, 2011 at 14:39
  • No, it is connected, and has internet access, but the icon just says "No Internet Access". I'm guessing it has to do with our proxy, and I'm looking for a way to make windows be aware that it is, in fact, connected.
    – IronicMuffin
    Commented Aug 12, 2011 at 14:42

2 Answers 2

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Windows determines if the machines have Internet access by attempting to download a small text file. It can tell if you have connectivity when it's able to download, and if the result doesn't match what's expected it then knows you're behind some sort of web login-required gateway.

The whole thing's laid out here.

Seems there's been a full exposé on the topic over at SuperUser.

So my guess is that you're getting this URL (http://www.msftncsi.com/ncsi.txt) blocked. Your options are:

  1. Disable NCSI
  2. Run your own NCSI web server and modify the registry to point there
  3. Unblock the Microsoft NCSI server.
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  • It works (setting the registry to disable it), but only after the PC has been on for a while. Good enough for me at this point. Thanks!
    – IronicMuffin
    Commented Aug 12, 2011 at 19:01
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Verification URLs change on Windows 10 and Windows Server 2016:

Before: www.msftncsi.com/ncsi.txt

On Windows 10 or 2016: www.msftconnecttest.com/connecttest.txt

It is important to verify the branch of the Windows registry, here you can see the URLs:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NlaSvc\Parameters\Internet

Extracted from: http://www.sysadmit.com/2017/07/windows-signo-de-admiracion-en-conexion.html

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