You can open the file in Excel, or you can import the data using an Excel wizard. The two most common text file formats you’ll work with are .txt and .csv, where .csv stands for comma separated ...

One way to turn a CSV file into a Microsoft Excel spreadsheet is to open the document in Excel, but with this method you won't see the text-import wizard that allows you to specify how Excel ...

Right-click the Excel file that you cannot open and select Properties. When the Properties dialog shows up, switch to the Security tab. Hit the Edit button to change permissions.

Quick tip: Excel files can only be opened by Excel or Google Sheets whereas CSV files can be opened by any text editing program, such as Notepad or TextEdit. How to open a CSV file in Microsoft ...

If the DAT file you're trying to open is text, you can convert the file into text in the Microsoft Excel program by first saving it as a CSV file. Right-click the DAT file on your PC and click "Open." ...