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.

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 ...

However, there is another method. In this case, you can use your Notepad to create a batch file, which will rename all the file extensions in a specific folder and all sub-folders at once.

File extensions are how Windows knows what to do with specific files, like opening text files in Notepad or Microsoft Office.

Blogger and Microsoft employee Derek Dysart has posted a great tip for automatically dating every new entry in a text file edited with Notepad. Open a blank Notepad file Write .LOG (in uppercase ...