File extensions are not shown by default. Here's how to enable them now:  Open the Windows search bar and type file options. Click File Explorer Options in the results list. Click the View tab at the top of the window. Remove the check mark from "Hide extensions for known file types" under "Advanced Settings." Click OK. You'll want to start with a file that can't be opened in Word, such as an image file (e.g., .jpeg, .gif, .png) or a sound clip (e.g., .wav, .mp3, .ogg). You'll be using this file to make a fake corrupted Word document. Since you'll be corrupting the file, be sure to choose one you don't care about. You can also make a copy of the file before changing its extension if you wish to preserve it. This highlights the file name, which means it's now editable. For example, if you're working with a file called file.jpg, replace ".jpg" with .docx. You'll see a pop-up asking if you're sure you want to rename the file. The file is now saved as a .docx file. If you try opening the file in Word, you'll see an error that says it's been corrupted. If you want to hide file extensions again, return to the View tab in File Explorer Options and check the "Hide extensions for known file types" box.
تأكد أن امتدادات الملفات ظاهرة. ابحث عن ملف ليس بملف وورد أو مستند نصي. انقر بزرّ الفأرة الأيمن على الملف ثم اختر إعادة تسمية Rename. غيّر امتداد الملف ليصبح .docx. اضغط على زر الإدخال ↵ Enter في لوحة المفاتيح. انقر على زر الموافقة YES.