Homekit devices not responding

Hi reaim,

If your Home devices disconnect from the network when you turn on your Mac, check the network setting for your Mac and make sure the location is set as Automatic by following How to use network locations on your Mac:

1. "In macOS Monterey or earlier, choose Apple menu  > System Preferences, then click Network. 
2. The Location pop-up menu shows the name of your currently selected set of network settings. The default location is named Automatic. Choose Edit Locations from this menu.
3. Click the add (+) button below the list of locations, then type a name for the new location, such as Work or Home or Mobile. (To remove a location, use the remove (–) button below the list.)
4. Click Done. The Location menu should now show the name of your new location. Any changes you now make to your Wi-Fi, Ethernet, or other network settings will be saved to this location when you click Apply. The network settings in your previous location remain as you left them, so you can use the Location menu to switch back at any time.
5. Click Apply to save your settings and complete the switch from the previous location to the new one. Your Mac then automatically tries to determine the correct settings for each type of network. If you need to change the settings manually, remember to click Apply again after making your changes."

Thanks for getting back to us, reaim.

Try to see if the same thing occurs booting into safe mode: How to use safe mode on your Mac - Apple Support

"Safe mode prevents your Mac from loading certain software as it starts up, including login items, system extensions not required by macOS, and fonts not installed by macOS. It also does a basic check of your startup disk, similar to using First Aid in Disk Utility. And it deletes some system caches, including font caches and the kernel cache, which are automatically created again as needed.

Apple silicon

1. Shut down your Mac.
2. Turn on your Mac and continue to press and hold the power button until you see the startup options window.
3. Select your startup disk, then press and hold the Shift key while clicking “Continue in Safe Mode.”
4. Log in to your Mac. You might be asked to log in again."

Also, try a new user account: Change Users & Groups settings on Mac - Apple Support

This can help us narrow things down.

Keep us updated.

Best regards.

Hi reaim,

We're glad to hear that everything is working alright again! Thanks for letting us know.

If this should happen again, and seems to be associated with the Private Relay, we'd advise to contact Apple Support, so they can take a look at what's happening.

Apple Support

Take care!