Sign into iCloud on your Mac and select the FindMy app. There's your Mac, your iPhone, AND your Watch all signed in. Dead in. If you find a consistent way to turn "Use Apple Watch to unlock your applications and your Mac" back on, please let me know ASAP. Thanks.
With watchOS 2 and later, you can use Activation Lock to protect your Apple Watch. With macOS Catalina or later and Mac computers that have the Apple T2 Security Chip or Apple silicon, you can use Activation Lock to protect your Mac. Here's how it works. Each time an iPhone or iPad is activated or recovered, the device contacts Apple to check
Select “Use Apple Watch Ultra to unlock apps and your Mac.” If you have more than one Apple Watch Ultra, select the watches you want to use to unlock your apps and Mac. If you don’t have two-factor authentication turned on for your Apple ID, follow the onscreen instructions, then try selecting the checkbox again.
2 years ago 178 3. Cannot Enable "Use your Apple Watch to unlock apps and your Mac" Due to some rather uninteresting circumstances, I recently had to reset my Apple Watch and restore it to a backup. Since, I have been attempting to enable my Mac's "Auto Unlock" feature where my Apple Watch will unlock it or allow me to authenticate.
Make sure all three devices are logged into the same Apple ID / iCloud account. Make sure Wi-Fi and Bluetooth are enabled on all devices. Disable Apple Watch unlock feature in Ventura. Completely shutdown and power off. Power back up and turn it back on. This seems to have worked for many people.
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