We show you how to open files with no extension in Windows 11/10. You can try these tricks or use one of these free software or online tools.

If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

Disabling File-Type Warnings Close the program you are using to open the file that gives you the "Always ask before opening this type of file" message, if it's currently running.

This free Web service does one thing and does it well: changing your file formats instantly with no hassles.

Click Open. If the app that you want to use to open the file type is greyed out, it's because macOS doesn't think there's a valid association between the two.

Google's latest 'blend online with offline' trick is automatically opening Google Drive files from the web with your desktop apps.

Type "wordpad" in the space provided and click the "OK" button to launch WordPad. Click the "File" menu and select the "Open" option.

CSV files are special text files that are quite common when dealing with spreadsheets. Here's how to open and make them.

In macOS, the Open With contextual menu that appears when you right-click (or Ctrl-click) on a file provides links to all the applications installed on your Mac that are associated with that file ...