So you have installed TwinCAT or you had it already installed and Windows has installed this shiny new update and now when you want to start a PLC runtime on your computer and you are stuck with some kind error message from TwinCAT about Hyper-V being the problem?

The solution sounds simple. To turn of Hyper-V. But how to do it exactly? And the main reason I’m writing this….I have already turned off the Hyper-V but the problem is still there!🤔

There are numerous solutions on the internet and it’s a matter of time until you find all you need to actually turn it off. I have found this forum post that sums up everything you need to do in one place and separated into a few stages. So when the most straightforward solution won’t work you will just go the the next level👍

Here you go: https://community.broadcom.com/vmware-cloud-foundation/discussion/disabling-hyper-v-hypervisor-on-windows-11-pro-host-to-get-vmware-17s-cpl0-vs-ulm-monitor-mode

❗If you will have to do Phase 3, the steps after restart that author does not remember are to basically confirm you want to disable DeviceGuard and VBS by pressing Windows button 2x. After you boot back to Windows, be prepared that login may fail due to security being changed. It wanted to connect to internet and reset pin using Authenticator app on my phone from me.❗

Yes, the article is for virtual machine software, but the problem is the same, to get Hyper-V out of way.

⭐ Enjoy your runtime TwinCAT! ⭐