Restoring nuget packages of a solution in .net Rider IDE: Failed to download package `x` The HTTP request to GET `x` has timedout after 100000ms

Question

I have ArchLinux distro, I'm testing .Net SDK on Linux for the first time. I installed a trial version of JetBrains Rider IDE. I created new ASP.Net Core project, but I get this error message in the Event Log window when building the solution or manually restoring Nuget packages of the solution:

1:51 PM Can't restore NuGet packages in integrated projects Failed to retrieve information about 'Microsoft.AspNetCore.WebUtilities' from remote source 'https://api.nuget.org/v3-flatcontainer/microsoft.aspnetcore.webutilities/index.json'. Settings Log Packages folder

1:51 PM Restore failed Failed to retrieve information about 'Microsoft.AspNetCore.WebUtilities' from remote source 'https://api.nuget.org/v3-flatcontainer/microsoft.aspnetcore.webutilities/index.json'. Settings Log Packages folder

This is the Log window content, as it's very large content I uploaded it to google drive: Here

Is anyone has faced this problem before? Also, why rider is trying to fetch all Nuget packages on planet Earth? I don't have a reference to Microsoft.Win32.Registry and one of these error lines complain:

COREMINIMAL: Failed to download package 'Microsoft.Win32.Registry.4.4.0'

EDIT 1

After, trying dotnet restore I get the following output:

$ dotnet restore

Permission denied to modify the '/opt/dotnet/sdk/NuGetFallbackFolder' folder.

Here are some options to fix this error:
---------------------
1. Re-run this command with elevated access.
2. Disabled the first run experience by setting the environment variable DOTNET_SKIP_FIRST_TIME_EXPERIENCE to true.
3. Copy the .NET Core SDK to a non-protected location and use it from there.

  Restoring packages for /home/m/Prog Projects Mid 2018/CSharp/testingRider/WebApplication1/WebApplication1/WebApplication1.csproj...
  Failed to download package 'Microsoft.Win32.Registry.4.4.0' from 'https://api.nuget.org/v3-flatcontainer/microsoft.win32.registry/4.4.0/microsoft.win32.registry.4.4.0.nupkg'.
  The download of 'https://api.nuget.org/v3-flatcontainer/microsoft.win32.registry/4.4.0/microsoft.win32.registry.4.4.0.nupkg' timed out because no data was received for 60000ms.
    Exception of type 'System.TimeoutException' was thrown.
  Retrying 'FindPackagesByIdAsync' for source 'https://api.nuget.org/v3-flatcontainer/microsoft.aspnetcore.webutilities/index.json'.
  An error occurred while sending the request.
    SSL connect error
  Retrying 'FindPackagesByIdAsync' for source 'https://api.nuget.org/v3-flatcontainer/microsoft.aspnetcore.mvc.viewfeatures/index.json'.
  An error occurred while sending the request.

The output is long too, and most of it is about retrying to download packages.

Answer 1

According to the attached Rider and dotnet logs, this problem is not related to Rider IDE.

There appears to be some first-time experience feature of dotnet that requires an access to dotnet/sdk/NuGetFallbackFolder which is not given so you get an error in the logs but that is probably not the real root case.

The issue is somewhere in your network between your computer and NuGet server as per the log message The download of 'https://api.nuget.org/v3-flatcontainer/microsoft.win32.registry/4.4.0/microsoft.win32.registry.4.4.0.nupkg' timed out because no data was received for 60000ms.

You should probably check your network and dotnet/NuGet settings.