Attaching the actual file is easy. Click inside the cell of the spreadsheet where you want to insert the object. Select the Insert tab. Click Object in the Text group to open the Object dialog box.

Microsoft Excel lets you embed content from other applications, including PDF files. You can embed a PDF file into a cell of an Excel worksheet and then use Excel's security features to lock the ...

First, create a blank spreadsheet in Microsoft Excel and ensure you have the .txt file on your PC. Then, switch from the Home tab to the Data tab. You can find an option called From Text/CSV here.