If you're having problems opening docx files in Wordpad, there are a few things you can try. First, make sure you have the latest version of Wordpad. If you don't, you can download it for free from Microsoft. If that doesn't work, try opening the docx file in a different program like Microsoft Word or WordPerfect. If all else fails, you can convert the docx file to a different format like a PDF or RTF.
A .docx file is a Microsoft Word XML file. When you open a .docx file in WordPad, the file is converted to WordPad's native format, .wri. This conversion means that some formatting, such as margins and tabs, may be lost.
Overall, docx files opening in wordpad is a positive development that will help improve productivity and efficiency for users. This new feature will make it easier to open and edit docx files, and will also help to improve compatibility with other software applications.