Karabiner-Elements: `Karabiner-VirtualHIDDevice-Manager activate` fails with `OSSystemExtensionErrorDomain error 8`

I tried to follow the instructions here to fix the driver alert problem. I got this error when trying to activate, similar to https://github.com/pqrs-org/Karabiner-Elements/issues/2488.

I then tried what was recommended in that issue, but I got this error:

 $ /Applications/.Karabiner-VirtualHIDDevice-Manager.app/Contents/MacOS/Karabiner-VirtualHIDDevice-Manager activate
activation of org.pqrs.Karabiner-DriverKit-VirtualHIDDevice is requested
request of org.pqrs.Karabiner-DriverKit-VirtualHIDDevice is failed with error: The operation couldn’t be completed. (OSSystemExtensionErrorDomain error 8.)

I am using macOS 10.15.7 and Karabiner 13.1.10. Downgrading to 12.10.0 worked as usual.

Thanks for taking a look. 😄

About this issue

Original URL
State: open
Created 4 years ago
Comments: 16

Most upvoted comments

Im getting a similar error, but OSSystemExtensionErrorDomain error 10 instead of 8. There’s no allow button in preferences. This is both on Catalina and Big Sur. I’ve tried various versions of Karabiner as well, but always the same result.

activation of org.pqrs.Karabiner-DriverKit-VirtualHIDDevice is requested
request of org.pqrs.Karabiner-DriverKit-VirtualHIDDevice is failed with error: The operation couldn’t be completed. (OSSystemExtensionErrorDomain error 10.)

It used to work without a problem before, but just stopped working after a restart.

+30

PaulKlinger on Dec 4, 2020

I found the same error but different error code.

/Applications/.Karabiner-VirtualHIDDevice-Manager.app/Contents/MacOS/Karabiner-VirtualHIDDevice-Manager activate
activation of org.pqrs.Karabiner-DriverKit-VirtualHIDDevice is requested
request of org.pqrs.Karabiner-DriverKit-VirtualHIDDevice is failed with error: The operation couldn’t be completed. (OSSystemExtensionErrorDomain error 10.)

And log reports on GUI window.

[2021-04-30 22:08:21.678] [warning] [virtual_hid_device_service] driver_version_ is mismatched: client expected: 10300, actual dext: std::nullopt

OS: Big Sur 11.3 KE: 13.4.4

It is totally annoying my Mac life without Karabiner-Elements!!!

+16

delphinus on Apr 30, 2021

Same issue on Ventura 13.2.1 😢

protoEvangelion on Mar 3, 2023

uninstall and re-install fixed this exact issue for me.

nicksrandall on Dec 8, 2021

hey guys, i got the same error 8, and reinstall KE fix this 😄

yingw on Apr 15, 2021