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.

Red Eye Rose received a file with a strange extension. She doesn't know into what program she should load it. Neither does Windows.

If you're one of the millions of taxpayers who delay their taxes, it's easy to get an extension to October 15.

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.

PNG, short for Portable Network Graphics, is a popular and high-quality graphic file format. The PNG format is lossless and supports transparency.