Here are 12 ways to open File Explorer in Windows 10:

1. Click on the File Explorer icon in the taskbar.
2. Press the Windows key + E on your keyboard.
3. Type “explorer” in the Start menu search bar and click on File Explorer.
4. Right-click on the Start button and select File Explorer.
5. Open the Run dialog box by pressing Windows key + R and type “explorer” and press Enter.
6. Open the Command Prompt or PowerShell and type “explorer” and press Enter.
7. Open Task Manager by pressing Ctrl + Shift + Esc and click on File > New Task (Run…). Type “explorer” and press Enter.
8. Open a folder and click on the Home tab. Click on the Open File Explorer button in the Quick Access section.
9. Create a shortcut to File Explorer on your desktop or Start menu.
10. Pin File Explorer to the taskbar.
11. Use a third-party app to open File Explorer.

I hope this helps! Let me know if you have any other questions.