If your Excel files are opening in Notepad on Windows PC, here's how you can reset the settings to make .xls, .xlsx, etc files open in Excel.

Once you do so, Excel files will become noticeable to the operating system again and you should make the file-to-program association once again to confirm the setting.

Learn how to open & view exported .TSV files on Windows PC using Excel. You can also use free TSV file viewer software or online tools.

1. Multiple Open Workbooks Maximize Hassles In Excel you have two clear and obvious ways to work on three or more spreadsheets: You can have too-small windows that don’t give you the big picture ...

Microsoft Word can accommodate a surprising number of file formats, and even take in Excel and PowerPoint data, though it might look funny. Here's how.