my apple watch 6 no longer unlock my iMac after installing Monterey 12.6.2

Hello and welcome to the community 🤗

If you can’t unlock your Mac with your Apple Watch

• Make sure the option to unlock your Mac with your Apple Watch is on : Unlock your Mac with your Apple Watch - Apple Support (CA)

• If the option is on but the option off and then on. (This will maybe resolve the problem)

• Made sure that the connection between your Mac and Apple Watch is good (to see that when you unlock your Mac you well see a message) If the connection is not good made sure that your iPhone, Apple Watch and your Mac are near.

• Made sure that you unlock your Mac one time after restarting. (You well see a message that you need to unlock your Mac to activate this option)

Made sure your Mac, iPhone and Apple Watch are updated

• Please update your Mac to the most recent version (Ventura 13.1 if you can) : Update macOS on Mac - Apple Support (CA)

• You can also watch this video :

• If you can update your iPhone to iOS 16.2 (if you can’t to iOS 15.7.2) : Update your iPhone or iPad - Apple Support

• You can also watch this video :

• Also update your Apple Watch to watchOS 9.2 (if you can’t to watchOS 8.7) : Update your Apple Watch - Apple Support (CA)

• You can also watch this video :

Restart your Mac, iPhone and Apple Watch

• You can try to restart your Mac : Shut down or restart your Mac - Apple Support (CA)

• You can also try to restart your iPhone : Restart your iPhone – Apple Support (UK)

• Finally if this not work try to restart your Apple Watch : Restart your Apple Watch - Apple Support (CA)

For more help or questions

• Come back us or contact Apple Support

Make sure that you do all my tips. Also Apple recommande:

If you can’t unlock your Mac with your Apple Watch :

• Turn off the unlock setting, then restart your Mac and turn the setting back on.

• Make sure that your Mac isn't using internet sharing or screen sharing.

If this not work

• Please contact Apple Support they will help you.