If your Excel files are opening in Notepad on Windows PC, here's how you can reset the settings to make .xls, .xlsx, etc files open in Excel.

If Task Scheduler is not opening an Excel file on your Windows PC, ensure the task is set to run only when user is logged on, or use these fixes.

If Microsoft Excel fails to recognize a file in the XLSX or XLS format, the data contained in the file could be corrupted. When you open a corrupted workbook in Excel, the program should ...

Learn how to use a Microsoft 365 setting to choose whether to open files in the online or desktop app, giving you full control for each file.