right click not working macbook pro

Please try the following, in order. Stop at any step where the issue is resolved:

1. Reset your Mac's SMC.
   • What: Reset the System Management Controller (SMC) on your Mac- Apple Support
   • How: Hold down the <shift><control><option> keys, and then, press the power button. Hold all of them for, at least, 10 seconds.
   • Why: Resets fans, keyboard backlight, status indicator, battery indicator, display backlight, power button, close/open the lid, sleep or shut down, battery doesn't charge, MagSafe indicator light incorrect status.
2. Boot up your Mac in Safe Mode.

   What: Use safe mode to isolate issues with your Mac- Apple Support

   How: At boot-up, hold down the <shift> key until the Apple logo appears on the screen.

3. Run either Apple Hardware Test (AHT) (pre-2013 Macs) or Apple Diagnostics (2013+ Macs) to uncover any hardware issues with your Mac.
   • How to use Apple Diagnostics on your Mac - Apple Support
   • Apple Diagnostics: Reference Codes - Apple Support
   • Use Apple Diagnostics or Apple Hardware Test- Apple Support
   • About the "Apple Hardware Test does not support this machine" message- Apple Support
   • How to Use Apple Hardware Test to Diagnose Mac Problems- OSXDaily
4. Make a Genius Bar appointment at your local Apple Store or Apple Authorized Service Provider.
   • Check Your Service and Support Coverage- Apple Support
   • For getting the right support, here's a genius idea- Apple
   • To contactApple Supportdirectly.