For security reasons, Microsoft Edge on Windows 10 enforces network isolation. The merits of this, especially when compared to Chrome, Firefox, or even IE, are questionable but beyond the scope of this article. We’re just here to get our localhosts working on Edge for testing!
Allow MS Edge to reach localhost
Early builds of Windows 10 had a flag in
about:flags section of Edge as shown at the bottom of this article. When Windows 10 Build 10158 was released, a shell command became required to allow it. This command uses the “CheckNetIsolation” tool.
Simply run the following command using an elevated (“Run as Administrator”) command prompt. Then restart your browser.
CheckNetIsolation LoopbackExempt -a -n=Microsoft.MicrosoftEdge_8wekyb3d8bbwe
For older versions of Windows 10
about:flags in the Edge address bar. Check the allow loopback box and restart your browser.
Still not working?
Try 1 of these older commands with your administrator command prompt and restart Edge.
CheckNetIsolation LoopbackExempt -a -n=Microsoft.Windows.Spartan_cw5n1h2txyewy
CheckNetIsolation LoopbackExempt -a -p=S-1-15-2-3624051433-2125758914-1423191267-1740899205-1073925389-3782572162-737981194