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UWP loopback exemption (Windows)

Allow Microsoft Store (UWP) apps to connect through VX on localhost

On Windows, UWP apps (apps installed from the Microsoft Store) are blocked from connecting to 127.0.0.1 and other loopback addresses by default. That restriction makes traffic from Store apps not entering VX when using VX is System Proxy inbound mode.

This tutorial shows how to remove the UWP loopback restriction so that store apps will be proxied when using System Proxy inbound mode. If you are using TUN mode, then you can skip this step since TUN mode handle all network traffic.

Watch the walkthrough below, or open it on YouTube.

This video is for Chinese language speakers

Follow these steps if you prefer text and screenshots.

1. Download the loopback exemption tool

https://telerik-fiddler.s3.amazonaws.com/fiddler/addons/enableloopbackutility.exe

2. Install the loopback exemption tool

3. Open the loopback exemption tool

Run the UWP loopback exemption utility as Administrator (the same tool shown in the video).

4. Pick the apps to exempt

Pick the apps that you want to remove restriction of

5. Click "Save Changes"

Click "Save Changes"

7. Verify success

If left bottom corner shows that successfully updated, then it works!

To undo later, return to the same tool and remove the exemption for those apps.

When you need this

  • You use System Proxy inbound mode on windows and a Microsoft Store app fails to be proxied.

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1. Download the loopback exemption tool2. Install the loopback exemption tool3. Open the loopback exemption tool4. Pick the apps to exempt5. Click "Save Changes"7. Verify successWhen you need thisRelated