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 ...

When you double-click on a file in Windows 8, Windows will automatically open that file using a program that has been associated with that file's extension. There may come a time, though, that ...

Learn how to use a Microsoft 365 setting to choose whether to open files in the online or desktop app, giving you full control for each file.

Love Office, but all your files are stored in Google Drive? Here's how to access Google's storage service similarly to OneDrive in Office for the desktop.

Numbers has the ability to open Excel files so you can work on them. You can also export spreadsheets in Numbers so that they are compatible with Excel.