Cannot install from command line

[jftl6y]

Trying to install to a new laptop - install the .NET 5.0.400 SDK and get the following:

dotnet tool install -g dotnet-repl

error NU1100: Unable to resolve 'dotnet-repl (>= 0.0.0)' for 'net5.0'.
error NU1100: Unable to resolve 'dotnet-repl (>= 0.0.0)' for 'net5.0/any'.
The tool package could not be restored.
Tool 'dotnet-repl' failed to install. This failure may have been caused by:

• You are attempting to install a preview release and did not use the --version option to specify the version.
• A package by this name was found, but it was not a .NET tool.
• The required NuGet feed cannot be accessed, perhaps because of an Internet connection problem.
• You mistyped the name of the tool.

[jonsequitur]

Can you post the results of the following two commands from your terminal?

>  dotnet nuget list source
>  dotnet --info

[jftl6y]

dotnet nuget list source
No sources found.
PS C:\Users\johnc> dotnet --info
.NET SDK (reflecting any global.json):
Version: 5.0.400
Commit: d61950f9bf

Runtime Environment:
OS Name: Windows
OS Version: 10.0.19043
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\5.0.400\

Host (useful for support):
Version: 5.0.9
Commit: 208e377a53

.NET SDKs installed:
5.0.400 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 5.0.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 5.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 5.0.9 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download

My nuget.config is 'empty'

[jonsequitur]

If you create a nuget.config with an entry for nuget.org, I suspect it should fix this.

[jonsequitur]

Did you get a chance to give this a try?