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

Need to use third-party programs to open files on your PC? Here's how to change file associations in Windows 10 and choose which apps open which file types.

Mac OS X computers use a default application to open every file type based on its file extension. If you don't want to use the default application when opening a file, you can select "Open With ...

If you can't open a file on your computer, don't give up right away. These tricks will give you a fighting chance of accessing or recovering its contents.

How to change the default program a file opens with in Windows 7 When you open files that have a particular file extension, Windows will look at its configuration to determine what the default ...

When you double-click a file on your Mac, the operating system will automatically open the file using the program assigned to that type of file. It is possible, though, to open the file using ...

To show the file type extension or file extension in Windows 11/10, you need to open the Folder Options panel and remove the tick from the Hide extensions for known file types checkbox.

What type of files can you open on ChromeOS? Your tried and true Chromebook can open almost all your essential documents, videos, images, and compressed files.

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.