Internet probe Icon - NCSI

Question

Hello there,

This issue has been driving me mad for weeks.

I have gone through dozens of internet pages and checked everything that I can think of but on some computers (all of them laptops) ramdomly I get the no internet symbol, event though internet is just fine.

The best reference I have found from MS is this one:

https://learn.microsoft.com/en-US/troubleshoot/windows-client/networking/internet-explorer-edge-open-connect-corporate-public-network

I have done all the checks described and everything seems to be fine. This happens only on the corporate network (domain), sometimes it shows on the wifi adapter and some other times on the nic (both land on the same network). I have tried disabling either of them to no avail. Also put the computers on different OU without any GPOs being applied. as we have a corporate firewall I have also permitted all traffic and filtering for testing purposes, no success as well.

Any help would be really appreciated. I really miss some kind of log that reflects why the check is failing.

Kind regards!

Answer 1

Hi ,

Let's confirm the following configurations:

1.Active probing must be enabled.

HKLM\SYSTEM\CurrentControlSet\Services\NlaSvc\Parameters\Internet\EnableActiveProbing should present with value 1.

[HKLM\Software\Policies\Microsoft\Windows\NetworkConnectivityStatusIndicator] NoActiveProbe should either not present, or value must be 0.

2.Passive probing must be enabled as well.

In case active probing fails, passive probing can also detect internet unless it’s disabled by GPO. Check below to make sure the customer didn’t disable passive probing. If it is, enable it and test again.

Group Policy path: Computer Configuration\Administrative Templates\Network\Network Connectivity Status Indicator
setting: "Specify passive polling" = Enabled, uncheck "Disable passive polling"

This GPO setting can be also confirmed from this registry key:

[HKLM\Software\Policies\Microsoft\Windows\NetworkConnectivityStatusIndicator] DisablePassivePolling = 1

Check the above configurations and if you have any updates during the process, please feel free to let me know.

Best Regards,
Candy

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Answer 2

Hi ,

Please make sure [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NlaSvc\Parameters\Internet] EnableActiveProbing set to 1.

And [HKLM\Software\Policies\Microsoft\Windows\NetworkConnectivityStatusIndicator] NoActiveProbe set to 0.

Restart the machine and check whether the issue still happens.

For your reference:

https://learn.microsoft.com/en-us/answers/questions/210275/ncsi-doesn39t-like-docker-and-pi-hole.html?childToView=210423#answer-210423

Best Regards,
Candy

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Answer 3

Hello Candy,

Thanks for your quick reply.

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NlaSvc\Parameters\Internet] EnableActiveProbing set to 1.

This one was set to 1 already.

And [HKLM\Software\Policies\Microsoft\Windows\NetworkConnectivityStatusIndicator] NoActiveProbe set to 0.

This one was set to 1, corrected to 0 and rebooted but the icon is still there.

The thing is that if I put a computer not joined to the domain on that same network it never shows the no internet icon.

Thanks again!

Best regards.

Answer 4

Did you mean modify the registry key of NoActiveProbe to 1 via GPO? As picture below:

If you mean here, yes, it will overwide the settings in the registry. Please feel free to let me know if I have any misunderstanding.

Answer 5

Thanks a lot for the follow up.

Sorry. I thought I was pointing out a setting in a GPO not a hive in the registry. But if this solves the issue I can implement it this way, insert a setting in the registry on all the computers in our network.

I will keep you on the loop and hopefully confirm this issue is solved.

Kind regards.