The feed ‘https://api.nuget.org/v3/index.json [https://api.nuget.org/v3/index.json]’ lists package ‘Newtonsoft.Json.11.0.1’ but multiple attempts to download the nupkg have failed. The feed is either invalid or required packages were removed while the current operation was in progress. Verify the package exists on the feed and try again.
Welcome to the Community!
Can you please show some screenshot of this error as well as let us know when it occurs and some more details?
This error sounds like either there is something interfering with your ability to connect to the API, or nuget.org may have been experiencing a temporary outage (it is run and maintained by Microsoft). Is there any security software either on your computer or possibly on your network (e.g. controlled by your company) that could be blocking your connection to nuget.org?