v1.x implementation
These versions use MSHTML web browser component. In modern Windows versions, it will be IE11.
v2.x implementation
v2 will use EdgeChromium as the web browser component. But, from the user's end, they should run the following command to get Neutralinojs apps working with administrator privileges.
CheckNetIsolation.exe LoopbackExempt -a -n="Microsoft.Win32WebViewHost_cw5n1h2txyewy"
The above command gives relavant permission for Neutralinojs (and all UWP applications) to access localhost from EdgeChromium.