If you can open it in the browser, this issue probably more related to the vs ide/nuget. config. Here's the basic nuget. config file that i'm adding to the root of my project: Immediately after the change, the add and restore commands works, and my development continues. Verify that your personal access token hasn't expired. To do that the nuget. config has to be copied into /root/. nuget/nuget/nuget. config. This was a private feed and the pat in the nuget. config had expired. Refreshing the pat fixed the issue. This can also happen due to authentication issues,. This type of error is thrown when there is a network issue between the computer and the activity package feed, which could be due to the firewall enabled in the machine or any restrictions on accessing online feeds. Finally i found the issue, at least in my case:

Can not containerize. net api project in visual studio 2022. According to the documentation's article nuget error nu1301: Restore could not be completed because the listed source is unavailable. Consult the error message for more details. You may need to inform the source owner as there might be issues that only they can address. Tried all recommendations, but no success. Or try updating your vs2022 to the latest version. If you're behind a proxy, ensure your proxy settings are correctly configured. Go to tools > options > network. Configure your proxy settings accordingly.

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Unable to run any command that need to connect to internet ( dotnet restore, dotnet workload update, dotnet tool install ). These command run to the timeout. Ofc this url works on my browser and from curl command. **** The “unable to load the service index” error occurs when nuget can’t find the service index for a private nuget source. The service index is a file that contains information about the packages that are available in a particular source.