Somehow the laptop had a sticky option input (even though sticky keys was off and it was not displayed in the top right corner) and activating/deactivating the sticky option key cleared it. Press option twice quickly to enable sticky and once more to turn it off (option key must be enabled if you previously disabled it in modifier key controls) Tried disabling option key in modifier key controls Keyboard viewer did not show that the option key was being pressed. (You must HOLD the option key, not simply press it once.) Then release and. For example, in many apps, if you press the Option key while viewing the File menu, File > Close changes to File > Close All. On a Mac, you simply hold the OPTION (or alt) key down while pressing the letter u. Here are some of them: Pressing the Option key while viewing a menu reveals hidden menu items. Keystrokes and trackpad were all of the sudden being modified as if the option key was being pressed. A Mac keyboard has many keys that function the same as keys on a Windows keyboard. I know this is an old thread, but its the first one that comes up on google and I finally got it fixed and wanted to share what worked for me in case anyone else is hunting for a solution. It is usually located between the Command and Ctrl keys on the left side of the bottom row of Apple keyboards. I searched and tried several things, coming close to losing my mind in the process. The Option key in Macs, also known as the 'Alternate' key, is commonly labeled with Alt and the symbol. This started this morning for me on a macbook pro in the middle of working on the computer. On Mac/Apple hardware, the keyboard has a special key called Option ( symbol) which serves as a modifier to the other keys, in order to enter certain.

Option key mac