MacOS Tahoe 26.0.1 bluetooth issue with 3rd party devices

I just updated my 2020 intel iMac to Tahoe 26.0.1 and after start up and reaching the login page, my bluetooth keyboard and mouse will not connect. I have a generic keyboard and my mouse is a Logitech MX Ergo. I was able to switch my keyboard and mouse to the 2.4 Ghz using their respective USB dongles and I was able to login into my iMac. After login, then the bluetooth connection to the keyboard and mouse works. Rebooted several times and the issue showed up after every reboot. The magic mouse and keyboard from Apple which are also bluetooth don't have this problem, it seems that only affect 3rd party devices. Has anyone seen this issue?

iMac 27″

Posted on Sep 29, 2025 4:20 PM

Top-ranking reply

Joelinho19

Level 1

8 points

Posted on Oct 6, 2025 8:25 AM

Try this:

System Settings > Privacy & Security > File Vault > Turn Off

I just tried this and seams to be working back (restarted and turned on/off several times my mac)

File Vault protection may be blocking pre-login hardware access to 3rd party devices

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19 replies

Oct 3, 2025 3:35 PM in response to Owl-53

That’s a bogus response. It’s up to Apple to do regression testing and make sure that whatever works before will work with the upgrade or at the very least provide a bug list of known issues. Apple either needs to address it by fixing it or documenting they won’t.

Sep 30, 2025 4:28 PM in response to jcn115

Understood...

see my post above.

jcn115 Author

Level 1

26 points

Oct 1, 2025 12:41 AM in response to JeanHenri76

Welcome to the club, I have the same iMac. The issue doesn’t affect Apple’s Magic Mouse and keyboard, both are Bluetooth. Only 3rd party devices, but why only after startup?

Skanpaul

Level 1

10 points

Oct 12, 2025 6:41 AM in response to leroydouglas

As you recomended, I filed a bug report. Hope other ones are going to do the same.

MacOS Tahoe 26.0.1 bluetooth issue with 3rd party devices