Updated: 10/17/2017 by Computer Hope

A confirmation that settings or an action is acceptable. For example, windows have an Ok button and when this button is pressed, any settings in that window are saved. If the window has no settings, Ok confirms you have read the message.

The picture below is an example of an error message in Microsoft Windows with an OK button. In this example, the OK confirms that the user has read the error message.

Ok button

Cancel, Option, Operating system terms, Push button