

Else call/email/go to the Apple Store and get their help (for free). There, select your user and tick the "Allow user to administer this computer" option and restart/log out and log back in.

Open the System Preferences app and go to Users and Groups under the System section. Select Automatically keep Microsoft Apps. If it gives you an error, that could just be the root cause of your problem. Check for updates and install Open an Office app such as Word, then on the top menu, click Help > Check for Updates. If it doesn't give an error message, you are the admin of the system and the error could be something else (go to Apple Store asap, you can get a LOT of help from them in resolving such issues). Here's how to do it for a MacBook, MacBook Pro and a MacBook Air Step 1: Shut down the Mac and then connect it to the power cable. The process is slightly different for different Mac models. You can check this by opening the Terminal app (press Cmd+Space to call Spotlight and type "Terminal" there or go to Applications -> Utilities -> Terminal) and enter sudo ls If you are certain the problem is not the USB device or the cable, the easiest way to fix the USB not working on Mac problem is to reset SMC.

Have you tried checking if you are an admin user of the system? Did you set an admin password when you first booted the system?
