There may be many reasons why your Fill series is not working in Excel. The most common cause of this issue is the disabled Fill handle. Other causes include providing incomplete data, the ...

For simpler tasks, the Fill Series tool can quickly generate lists. These methods are especially valuable when working with large datasets, as they eliminate manual errors and improve efficiency. 4.

If Excel is not highlighting cells in the formula, enable 'Allow editing directly in cells' and 'Enable fill handle and cell drag-and-drop' in Excel options.