Mac OS Catalina keeps disconnecting bluetooth devices

Press shift + Option/Alt at the same time as you click Bluetooth in menu bar.

Click on Debug > Remove all devices.

Open the menu again and click Debug > Reset the Bluetooth module.

I was having the same problem, until I read a solution related to delete the Bluetooth plist entry. Did that, and Bluetooth didn't work anymore. Until last night. I watched a video on Youtube and the solution shown didn't work, but I figured it out by myself.

1. Go to the following page...https://developer.apple.com/download/more/
2. Search "Additional Tools"
3. Download version 11.4, and install
4. Open "Hardware" folder, and execute Bluetooth Explorer. A Bluetooth icon is shown on Apps Bar. Click there to open the App.
5. Under the "Tools" menu select "Modify Software & Device Configuration
6. 
7. On the "Setup (Auto BTSA)" square, click on "Go". The computer will restart, and Bluetooth will be Active again, and no more disconnecting problems.
8. 

Hello Jayant,

Thanks for posting in the Apple Support Communities with your question about Bluetooth connectivity on your Mac. I'd be glad to assist.

The first step I would take is updating your Mac, as macOS 10.15.3 is currently the latest version available. As with most updates, I always recommend backing up prior to completing any updates. Once that is done, look over How to update the software on your Mac to finish up that step. Once you're updated, test once more.

If the issue is still present, test in a new user account to see if the issue follows you across users or if it is user specific.

How to test an issue in another user account on your Mac

Let me know what you find out.

Take care.

Hi,

Sound like the problem I have with my iMac Pro which randomly, simultaneously disconnects all Bluetooth devices and then thirty seconds or so later reconnects them. This happens on a range of Bluetooth devices including keyboards, mice and headphones from different vendors. I've worked through all the resetting of the Bluetooth module, creating a new user account, reinstalling macOS; creating a new boot partition. Last week, AppleCare arranged for the machine to be collected and a complete new motherboard was put in.

It's still happening.

Not sure there is very much in the iMac Pro that isn't on the motherboard, so either I have been very unlucky and got another machine with a dodgy Bluetooth module, or the problem lies in software.

Apple Support are on the case - but so far no explanation of what is going on.

I recommend people get in touch with them and file a report explaining all the steps they've done. I'd also recommend catching as much data as possible by running the Console application, clicking the Start button and then entering Bluetooth in the Search field - this will only show messages relating to the Bluetooth functionality. On my machine I get a host of errors when Bluetooth falls over that the machine is unable to send data packets. You can then use Copy and Paste to share this information with Apple who will provide an upload link for information when you file a case.

So annoying...

Same issue, 2018 MBP 15", consistent since 10.15.1, persisting on 10.15.5. Sent it in for factory repair with no change in behavior.

Only solution has been to wipe it and re-install Mojave, where Bluetooth works fine.

Been having this problem for very long time and now i'm thinking that there might be interference between WIFI and Bluetooth that causing bluetooth to drop connection.

https://support.apple.com/en-ca/HT201542 this link might be helpful...

There are reports from other posts that the 'Handoff' function affects the stability of bluetooth. I don't know the reason why but the problem does disappeared after disabling the 'Handoff' function. This solved my problem temporarily ... but Apple has to do something on it.

Found it last night..... Sys Prefs, General, uncheck "Allow Handoff between this Mac and your iCloud devices

I've been suffering with this problem for quite some time (couple of months). Using a 2 years old MacBook pro. Never had these issues before upgrading to Catalina.

I have a case open with Apple enterprise support and, so far, they couldn't pin point the problem. We got to a point where they asked me to install a fresh Catalina on another partition: like if I don't have anything else to do than debugging for them. Come on Apple, with all your expertise you are not able to find a problem on your own logs?!

One confusing thing for me is the fact that the issue doesn't always manifest. It all might work fine for 1 week and then, suddenly, it starts dropping connection every 10 minutes.

Now, something happened that might be of interest to everyone here.

I haven't had any drops for the last 2 weeks. During this period I had Wi-Fi disconnected/turned-off. Today I turned Wi-Fi on again on my home network just to print a document and sudenly I lost my BT mouse (Apple mouse by the way).

While this would require more validation, maybe you just want to give it a try and see if it makes any difference for you. Or maybe you already did and, in that case, you can just tell us your experience.

Good luck to you all!

I found this on another thread and it fixed this issue. Hope it helps the rest of you as well. https://discussions.apple.com/thread/250811773

I was able to resolve the issue by setting up a new admin user and log with my iCloud account and if I delete the old user account the problem comes back, very strange...

Yes same problem on my Mac pro 2013 with Magic Trackpad, Apple keyboard and AirPods keep getting disconnected after the firmware update from mavericks to Catalina. I’m currently running the latest public beta of big sur hoping there’s a fix soon but still experiencing same problem. My only fix for now is using USB Bluetooth adapter never drops connection.

jiri209 wrote:

This can maybe help in some specific situations. But it doesn't solve the problem of BT headset disconnecting when switching from pure audio playback (AAC etc codec) to playback+mic (SCO etc codec) and back.

Btw I finally managed to update to Big Sur from Catalina and it seems that this particular problem has been solved. My BT headset no longer disconnects when switching modes (codecs). Hopefully it won't stop working in the near future...

With Big Sur 11.4, the problem (see my previous posts) persists and when the bluetooth crash

BluetoothHCIReadLocalVersionInformation failed; .....
Bluetooth Support Initialization complete.
Error getting HCI transport info: ....

(log from BT Explorer)

...it's impossible to connect any device!

The solutions to allow me to reconnect the devices are:

• Reboot
• or, from BT Explorer > Tools > Controller Options > Reset

Since Apple keep ignoring our requests, I bought this Bluetooth on amazon https://www.amazon.ca/dp/B00ITYBN6E/ref=cm_sw_em_r_mt_dp_U_GEEbFb528NK12 

I don't have any issues now :)