NuGet Warning NU3002

Package 'SamplePackage v1.0.0' from source 'https://contoso.com/index.json': The '-Timestamper' option was not provided. The signed package will not be timestamped. To learn more about this option, please visit https://docs.nuget.org/docs/reference/command-line-reference.

Issue

The -Timestamper option was not provided to NuGet Sign command.

Solution

To enable long-term signature validity after the signature certificate has expired, please ensure that the package signature is timestamped.