You can edit the same Excel file with multiple users through a feature called co-authoring. This feature lets multiple people make changes in a document stored on a remote, so-called cloud server ...

If an Excel file is locked for editing, you can unlock it by getting access from the other user, ensuring the version you are using supports co-authoring, or putting the document in SharePoint or ...

Microsoft Excel application allows you to share your Excel workbook with multiple users across the web. That said, only the users having access to your workbook can open and modify it.