macOS HS 10.13.4 breaks Boot Camp drivers/keyboard

Looks like it might not be the macOS update - check the bottom of this thread Problem Bootcamp Windows 10 & Bluetooth

there is a windows security update which has apparently killed BT functionality in windows.

It is of course related only to Apple peripherals. In my similar thread I explained that if you uninstall Apple mouse and keyboard drivers as well as their Bluetooth radio driver, everything works, but you're not getting scroll and functional key, obviously.

Buying another mouse is not an option since for most people on iMacs keyboard isn't working as well.

From March 22, 2018—KB4089848 (OS Build 16299.334) ,

• Addresses issues where Bluetooth devices fail to receive data after a restart.
• Addresses issue where some Bluetooth card readers don't work after a restart.

These two may be the primary culprits.

Verify that BT link keys are identical on both sides.

Did Windows Update provide a Security or a Driver Update? Please check Windows Update history.

There are quite a few issues with 1709 (Fall Creators Update) and Bootcamp drivers. 1607 (Anniversary Update) works, as long as you are careful with Windows Updates.

Hi.

Same issue here. I’ve been onto Apple support for ages and not got a solution. I suspect it’s actually the Windows 1709 & or one of the security updates that’s causing the problem, as it worked before running Windows update.

It’s total PITA.

I’m doing a total fresh install of MacOS then of Windows, but I won’t update to 1709. Hopefully that will sort the problem.

Has anyone else had any other success?

As an aside, I found that after trying to use Windows, then booting back into MacOS, my mouse didn’t work & it too a good while for MacOS to find it again. It’s bizarre.

The same with Magic Mouse 2. To check that it's not windows update problem, I tried to restore whole bootcamp partition from backup copy - no luck. So it's definitely 10.13.4 update problem.

The only way I've found:

1. When in Mac OS - remove mouse from BT panel.

2. Reboot to Windows

3. Turn off mouse and BT, then turn on.

4. Open BT settings, and connect mouse

And when you return to Mac OS, you again need to turn off/on both, and then add mouse from BT panel.

Very annoying way.

BT device worked on 1709 before latest High Sierra update. If something changed in Mac OS, we expected similar changes in Bootcamp drivers. Unfortunately not. Seems latest update brings breaking changes in BT keys sync algorithm.

yep, 10.13.4 update broke magic keyboard 2 pairing in boot camp for me too. I was able to pair keyboard after removing pairing in macOS, but after restart it did not work anymore. Tried basically everything I could find to fix this, but no success. As it is now, using magic keyboard2 in macOS and bootcamp on Bluetooth is not happening. Quite disappointed with this mess almost instantly after investing 2700e on new iMac.

It seems that pairing problems are related especially with apples magic devices (can't confirm though). I'm using logitech MX master 2 mouse, and I don't have any problem using bootcamp and macos even after new update. This is of course because I can assign different bluetooth channels for different operating systems, so they are not mixed. If you are in market for new mouse I can give recommendation for this.

However, I'm stuck with magic keyboard 2, which does not work as described above. I don't really want to start removing windows 10 security updates, so I'm just using it with lightning cable now. I really hope Apple gets their act together with bootcamp drivers.

Same thing. Opened thread as well. Probably a firmware. Tried resetting PRAM and reinstalling drivers. No luck. Did you try SMC reset?

Near sure that the core of problem is 10.13.4 update. I have bootcamp backup made when all works fine. I restored it and mouse doesn't work.

The only difference is that I got High Sierra update.

See Dual Booting Windows 7 + Mac (Mountain Lion) with both Magic Trackpad and Magic Mouse for the explanation about link keys. In High Sierra /private/var/root/Library/Preferences/blued.plist has been replaced with /private/var/root/Library/Preferences/com.apple.Bluetoothd.plist . Also, see Re: Keyboard that allows pause/break, prt screen etc? .

FWIW i’d done a fresh MacOS install followed by Windows 10 bootcamp yesterday & all was good, until I rebooted after performing the Windows update. It was at that point it stopped working so I reckon the issue is definitely that 1709 update and/or the 10.13.4 High Sierra update. Something has got messed up somewhere, as up until 2 days ago my 2017 27” 3.8ghz iMac worked fine in both operating systems.

I REALLY don’t want to have to start plugging the keyboard and a USB mouse in every time I want to use Windows. At £2200+ for a desktop computer I should have to!