Currently, you can't work with macros in Excel Online. But you can open a workbook that contains macros—you just won't see them. In Excel Online, you can make changes to its worksheets and save the workbook, and the macros will still be there to work with when you open it in the Excel desktop application.
If you have the Excel desktop application, you can use it to work with macros. Here's how:
Click Open in Excel and follow the steps in Create or delete a macro.
To delete a macro:
If you open a workbook that contains macros, you won't see any messages from Excel Online. But if you know it contains macros anyway and want to remove them, you'll need to do so in Excel. Follow the steps in Create or delete a macro.
Did you know?
If you don't have an Office 365 subscription, or the latest version of Excel, you can try it now for free: