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 workbooks, but can also use the XLS format.

XLS is the default file type for Microsoft Office Excel files. It is compatible with nearly all programs that read spreadsheet files. If you are looking to manage your spreadsheets while you're on the ...

Conditional formatting highlights cell-level differences, while Power Query reveals structural changes across entire datasets ...

While it is technically possible to open an Excel file in Notepad, this is not a good idea. Excel files are binary files that contain complex formatting and data structures. When you open an Excel ...

If you notice that your Excel files are opening in Notepad, then read this post to learn how to fix the issue. The default behavior of a document or file is to open in the application with which it ...

Spreadsheets: love them or hate them, they are a part of modern-day life and Microsoft’s Excel software is the go-to for most users spreadsheet needs. But what happens when you want to edit a ...

Test your Excel skills with this Excel Skills Challenge across 5 levels, featuring 5 Excel challenges that simulate an Excel test or interview scenario. The pass rates vary significantly, from 50% at ...

If Excel keeps blocking files from being inserted, chances are the file is blocked by Trust Center, or maybe the workbook or locked. In some situations, we could be dealing with a corrupted file.

Microsoft Excel has several features designed to help you recover unsaved versions of spreadsheets and prevent data loss. If Excel closes before you save a file, you should see a Document Recovery tab ...

I'm hearing rumblings about some of our APAC users taking minutes at a time to load excel files over the network from the local file server. This seemed to start about 3 weeks ago, the troubleshooting ...