Why does the UWP app disable the loopback network by default?

Question

Hi Guys,

I'm developing the UWP app for sideloading. The app will request the localhost ap server. When my customers install the app for the first time, they do not known enable the network loopback, then app always send http request timeout.

Why does the UWP app disable the loopback network by default?

Thanks,

Steven

Answer 1

Hello,

Welcome to Microsoft Q&A!

Why does the UWP app disable the loopback network by default?

In short, the reason is the security concern.

Loopback is the process of communicating with a network server listening on localhost (the loopback address).

To maintain security and network isolation, loopback connections for IPC are blocked by default for packaged applications.

You could find more information here: UWP- Interprocess communication (IPC)

Thank you.

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