How does Win10 remove the exclamation point

on the notification area network icon? Like Win7/Win8.1 and other systems, Win10 will automatically monitor the availability of the network, and will notify the network in the lower right corner when the network cable is connected but the network is unavailable. A yellow exclamation point is displayed on the icon. As shown below:

But sometimes when we are using some special network, such as using special proxy or connection filtering, even if the network is normal, there may still be an exclamation point here. And can not be eliminated, you can try the following method to remove this mark:
• Open the run by Win+R, enter regedit and enter the registry editor;
Note: modify the registry is risky You can use the cleanup function in the cleanup optimization software to back up the registry before the operation.
• Navigate to the following registry location:
HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindowsNetwork Connections
• Create a new DWORD value named NC_DoNotShowLocalOnlyIcon on the right, double-click to change its value to 1;

&bull Close the registry, restart the resource manager (you may need to restart the system), then the exclamation mark on the network icon will disappear, as shown below: