VS Code C# – System.NotSupportedException: No data is available for encoding 1252

I faced the same problem with .net Core application. I added the System.Text.Encoding.CodePages nuget package and registered the encoding provider before ExcelReaderFactory.CreateReader(stream) which resolved the issue.

System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
//open file and returns as Stream
using (var stream = File.Open(fileName, FileMode.Open, FileAccess.Read))
{
      using (var reader = ExcelReaderFactory.CreateReader(stream))
      {
      }
}