NuGet Warning NU1803

Issue

You are running the 'restore' operation with an 'HTTP' source, 'http://api.source/index.json'. Non-HTTPS access will be removed in a future version. Consider migrating to an 'HTTPS' source.

Solution

You may need to do one of the following:

  • Correct the specified url. You may have mistyped the source url. Change the url to explicitly request the HTTPS version of the source.
  • Work with the owner of the source and ask them to migrate to HTTPS.

To learn more, refer to the HTTPS everywhere blog.