How to Open an XLS File in Excel. XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save ...

While there is a way for you to open two Excel workbooks at the same time, you can also open multiple spreadsheets in separate windows. Learn how!

CSVFileView is a free portable tool that lets you open CSV files and manage data without using Excel or Google Sheets on Windows 11/10.

I have an excel file a coworker sent me that lags tremendously. I tried to narrow the problem, until I deleted all the data on the sheet, and the file would still lag. I checked the file for any ...

How to Open Excel 2007 Files As Separate Windows. If you work with multiple Excel files over the course of a workday, and especially if you use a dual-monitor setup, you might wonder how you can ...

This month's monster security patch for Office breaks Excel when it tries to open HTML files, and it seems unlikely Microsoft will fix the problem ...

Need to look at invisible files and show hidden file extensions in Windows? Here's how to reveal them.

The guide provides insight into how to use the hidden “FILES” function in Excel, a legacy macro function that lists all files in a specified folder. MyOnlineTrainingHub takes you through how ...

The easiest way to see hidden files on a computer running macOS is to use the Finder app. Open it up, then use the keyboard shortcut Cmd+Shift+. (that's the period key) to unhide files and folders ...

Microsoft Excel has several features designed to help you recover unsaved versions of files and prevent data loss.