How can I read CSV files without Microsoft Access Runtime installed?

You’ve run into a known limitation, at the moment there isn’t a true drop-in replacement provided. It would also be worth raising this as an enhancement request. Given that Access Runtime is now EoVS, having a native CSV driver without external dependencies would help a lot of teams in similar situations.

If you want to avoid a large refactor, a practical workaround is to create a small wrapper that mimics the DDT.CSVDriver interface. That way, your existing looping logic can remain mostly unchanged and you only replace the driver initialization.

This won’t be a perfect replacement, but it’s usually enough to keep existing tests running with minimal changes. Just be aware that a simple implementation may not handle more complex CSV cases (quoted values, embedded commas, etc.), so you may need to extend it depending on your data.

// In your script replace 
// var DataSS = DDT.CSVDriver(file);
// with
var DataSS = CustomCSVDriver(file);

function CustomCSVDriver(file) {
  var f = aqFile.OpenTextFile(file, aqFile.faRead, aqFile.ctANSI);
  var lines = [];

  while (!f.IsEndOfFile()) {
    lines.push(f.ReadLine());
  }
  f.Close();

  var headers = lines[0].split(",");
  var index = 1;

  return {
    ColumnCount: headers.length,
    currentRow: [],

    ColumnName: function(i) {
      return headers[i];
    },

    Value: function(i) {
      return this.currentRow[i];
    },

    Next: function() {
      this.currentRow = lines[index].split(",");
      index++;
    },

    EOF: function() {
      return index >= lines.length;
    },

    Name: "CustomCSVDriver"
  };
}

If this resolves your scenario, marking it as the solution helps future readers find it quickly.