Read range:Index was outside the bounds of the array

Hello, when I use excel to read range activities, I often get an error message that the index is outside the bounds of the array, but not every time, can you help me solve this problem, thank you very much.

Certainly, I can help you with that. The “Index out of bounds” error typically occurs when you try to access an element in an array or collection using an index that is either negative or exceeds the size of the array.

To troubleshoot this issue, here are a few steps you can follow:

  1. Check the Excel file: Ensure that the Excel file you are trying to read is in the correct format and contains the expected data. Make sure there are no empty cells or unexpected values that could cause issues during the read operation.
  2. Verify the range: Double-check the range you are specifying in the Read Range activity. Ensure that the range includes all the data you want to read from the Excel file. If the range is too small or exceeds the actual data range, it can result in an index out of bounds error.
  3. Handle empty cells: If your Excel file contains empty cells within the range you are reading, you might encounter the index out of bounds error. Consider using conditional checks or filtering to exclude empty cells from the data being processed.
  4. Validate data types: If you are expecting specific data types in the Excel file, validate that the data in each cell matches the expected type. Unexpected data types can cause errors during the read operation.
  5. Debug and log: Add logging statements or breakpoints in your workflow to identify the specific row or cell that causes the error. This will help you pinpoint the exact location where the index out of bounds error occurs and analyze the data causing the issue.


I guess you are using workbook read rnage…try using excel scope read range might solve the issue

That happens because of the workbook read range using closexml which might fail on few excels because of the formats