mdmclient high CPU usage

I had this issue too.

I am a network administrator and we are using Jamf MDM.

Your campus might be using Jamf or any other EMM/MDM.

If you have admin permissions on your computer, and you know how to enroll back in to your MDM, than the simplest solution would be to go to system preferences -> profiles, and delete all the profiles and CA certificates, restart the computer, and then re-enroll with your MDM, to receive all the services that it provides.

Please note that removing your MDM profile could also remove your WiFi profile, so be sure you have a way to re-enroll before removing any profile

If you are don't have admin privileges on your computer, you need to open a ticket with your campus support service,

let them know that you are experiencing this issue, and send them a screenshot of all the profiles that are installed on your computer (Specifically configuration profiles and policies that contain Kernel Extensions might be a cause of this).

Mojave and Catalina prefer system extensions to kernel extensions, and Apple are moving developers away from kernel extensions as these are considered security risk.

If your campus's system administrators are still distributing kernel extensions, they should make sure that they are not scoped to computers running 10.14.x and higher.

Me too.It's been bothering me for days.

Each time mdmclient starts, I have to kill it.

I, too, have this problem with Catalina on my 15" MB Pro. Cuts down battery life considerably.

Me too.