Cannot install custom modern WSL2 distro that is hosted remotetly

@OneBlue is already working on this.

Since Mar 28, 2025.

Hi all,

I am going to register a modern WSL2 distribution with respect to following [guide](https://learn.microsoft.com/en-us/windows/wsl/build-custom-distro#adding-your-distro-to-wsl---install-for-your-enterprise-or-group):

The local use case where the Url parameter will be resolved as a local path works fine:
`Url = "file://$TarPath"`

However, I want to set the `Url` parameter to a URL that points to the remote location of the TAR-archive. The download of the distribution fails (in my case due to 401):
```powershell
PS C:\Users\MyUser> wsl -l -o
Below is a list of valid distributions that can be installed.
Run the installation using the command wsl.exe --install .

NAME FRIENDLY NAME
MyDistro-v1 MyDistro-24.04 (v1)
PS C:\Users\MyUser> wsl --install MyDistro-v1
Downloading: MyDistro-24.04 (v1)
Not authorized (401).
Error code: Wsl/InstallDistro/0x80190191
```

My question:
**How can I configure wsl.exe to download the TAR-archive with existing credentials? Or do it need to provide some kind of environment variables**

Best Valentin