Bluetooth Issues Since Surface Updates - 5 August 2021

Will try, thanks!

Hi everyone,

I have a surface pro 5 and can confirm that there are issues with the most recent windows update which made bluetooth wonky.

Some of my symptoms are:

1. bluetooth mouse disconnects and reconnects itself intermittently.
2. surface pen does not write properly. It will start writing itself even without touching the surface screen while hovering with the pen. This makes the pen almost impossible to use. I'm a teacher and require the pen daily as my teaching tool. This issue has totally wrecked my surface pro experience.
3. surface keyboard will not connect when it's connected to the surface at the 45 degrees angle. To make it work, I need to move it away from the screen and let the keyboard lie flat. Only then, will the keyboard respond.

Above issues are pressing issues as I had a perfectly working surface pro before the most recent firmware updates in August like what others have experienced here. If others have experienced such issues, I hope microsoft could roll out an update soon as you guys have disabled the ability to rollback updates.

Hi SamLim1, welcome to our Windows Update Support Group lol. Many of us have been dealing with this for the last couple weeks as you can see from this thread being 7 pages deep. That said, so far for myself, I have found 2 solutions if you're in dire need (which it sounds like you are).

1. An external USB Bluetooth dongle should get your pen up and running as it appears to be a conflict between the recent windows update and Marvell's bluetooth adapter driver. I tested the ASUS Bluetooth USB-BT500 and it worked great. That said, it also set me back $30 CDN and uses the solitary usb port available, so obviously not a long term solution. Mostly, it just solidly verified the issue lay with the marvell driver.
2. You can try rolling back the driver and disabling driver updates to keep it at its rolled back status. I found this solution on another thread in this forum and so far it is working and has kept me operational the longest in the last 2 weeks (other than switching to the USB BT adapter). You'll need to uninstall the Marvell Bluetooth Adapter in your Device Manager (be sure to check uninstall drivers as well) and then restart. When you restart, you will need to access your Group Policy Editor and enable Do not include drivers with Windows Update to prevent windows from auto-updating the drivers you just rolled back. If you scroll back a page or two, you should be able to view more detailed instructions on how to do this all.

Ymmv, but hopefully that gets you up and running long enough to get some work done!

Hi there, thanks for the reply. I shall try your solutions.

Much appreciated!

My Surface Pro 2017 i7 16gb 1TB suffering from same issue. Instructions above does not help at all. In 2-5 minutes after reboot my Microsoft Sculpt Comfort bluetooth mouse stops working and in few minutes more my Logitech K380 bluetooth keyboard stops working. Then sometimes bluetooth icon disappears from the taskbar and I got an exclamation mark on Marvel AVASTAR Bluetooth Adapter saying Windows has to stop this device because it worked incorrectly. I've tried to revert back old drivers, tried to download .MSI above for my device and reinstall all the drivers. Tried to change batteries in my devices for a new ones just in case. Tried to reset my Surface fully with a full data wipe even but the issue still persist since this is a firmware bug and I am not able to revert it.

I really think on selling my Surface and getting Samsung Galaxy Book Pro 360 instead or something like this...