How to Fix 'net_http_client_execution_error' in UWP Apps by Enabling Local Loopback?

Troubleshooting Local Network Loopback in UWP Applications

UWP applications packaged as .appxbundles may experience "net_http_client_execution_error" when attempting to access localhost (127.0.0.1). This is due to Windows' default security restrictions.

Enabling Loopback Access for UWP Apps

The solution involves using the checknetisolation.exe command-line tool to manage network isolation settings.

1. Using checknetisolation.exe:

   This tool allows modification of an app's network access permissions.

2. Granting Loopback Access:

   Execute this command to enable loopback access:

   <code>c:\>checknetisolation loopbackexempt -a -n=<package family name></code>

3. Revoking Loopback Access:

   Use this command to remove loopback access:

   <code>c:\>checknetisolation loopbackexempt -d -n=<package family name></code>

4. Finding the Package Family Name:

   Locate your app's package family name (e.g., "MyPackage_edj12ye0wwgwa") within Visual Studio's Package.appxmanifest editor or using the PowerShell command Get-AppxPackage.

Rectifying Intermittent Loopback Problems

If loopback access becomes unreliable, try these steps:

1. Clearing Existing Exemptions:

   First, remove all existing loopback exemptions using:

   <code>c:\>checknetisolation loopbackexempt -c</code>

2. Re-applying Exemptions:

   Then, individually re-grant loopback access to each application requiring it.

For comprehensive details, refer to the official Microsoft documentation: https://www.php.cn/link/10a9288f519d683f87f6443f7b6810e6.

The above is the detailed content of How to Fix 'net_http_client_execution_error' in UWP Apps by Enabling Local Loopback?. For more information, please follow other related articles on the PHP Chinese website!