However, if you try to open File Explorer directly using ... from the official website. Open Notepad and enter the following text, replacing "C:\Program Files\OneCommander\OneCommander.exe ...

If you notice that your Excel files are opening in Notepad ... the Open With option. This option allows you to open a file using a desired application. Navigate to the file in File Explorer ...

As strange as it might sound, Notepad ... just open Task Manager, right click on Windows Explorer, and select the Restart option. This will cause any open copies of File Explorer to close.