Hi @Anonymous
There is no way to extend the number of rows that is accessible beyond 2000.
As @Pstork1 says, there is a 2MB limit to the size of your Excel file. If you want to extend the amount of data that you can store in a spreadsheet by extending the number of columns, you'll likely hit the 2MB soon and you'll end up in the same situation
The only workable solution is to work out a way in which you can partition your data, and to split it across multiple Excel files. You would then create a separate connection for each Excel file.
Alternatively, if you're working with read-only Excel data that doesn't change, you can import it as static data and there isn't any limit to the amount of rows that you can import this way.