Apple Watch Reset Sync Data not working

Hello McTTS,

Since both your iPhone and Apple Watch are updated, and this behavior continues with not begin able to reset your sync data, try a forced restart on your Apple Watch with these steps to see if that resolves the issue for you:

Force restart your Apple Watch

You should force restart your Apple Watch as a last resort and only if it's not responding.

Don’t force restart your Apple Watch if you're updating watchOS. After you see the Apple logo and progress wheel, leave your watch alone and on its charger until the update finishes.

To force restart your Apple Watch, press and hold both the side button and Digital Crown for at least 10 seconds, then release both buttons when you see the Apple logo.

You'll find these steps here: Restart your Apple Watch

Take care.

Hi McTTS,

Thanks for coming to Apple Support Communities for help today.

From your description, it sounds like the issue may be resolved by updating your iPhone to iOS 16.2. Here's how to Update your iPhone or iPad.

"Update your iPhone or iPad wirelessly

1. Back up your device using iCloud or your computer.
2. Plug your device into power and connect to the internet with Wi-Fi.
3. Go to Settings > General, then tap Software Update.
4. If you see more than one software update option available, choose the one that you want to install.
5. Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do."

Have a fantastic day!