I enjoy the calls from Windows Technical Support. I treat them like a game - how long can I keep these people on the phone (often while I'm doing something else)? I can usually tie them up for about a half hour, but I'm not going to give them remote access to my computer, and there's only so long I can pretend to have trouble letting them in until they give up. I've always wondered what they would do if they actually could get in...
Then I remembered: Microsoft makes free images of Windows installations available! They're intended for testing Internet Explorer and Edge, but they are full versions of Windows. The only limitation is that they're not activated, so they will stop working 90 days after first use, but that's not a problem. So here's what to do:
1. Download and install VirtualBox, which is free. https://www.virtualbox.org/wiki/Downloads
2. Download one of the Microsoft VMs for VirtualBox. Pick whatever version of Windows you want. https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/
3. In VirtualBox, create a virtual machine with the VM that you downloaded. Make sure it's not configured to share files from your primary operating system. Before you boot it, make a snapshot of the VM.
4. Boot it up and make sure it works. You'll want to change the wallpaper so it's less suspicious (the default wallpaper has instructions about how to use the VM), and you may also want to remove the evaluation watermark that shows up in the bottom-right corner of the desktop (there are sites with instructions on how to do this).
Now you're all set! The next time a Windows Technical Support scammer calls you and wants you to install something on your computer to give him access, go for it! He can wreck your honeypot all he wants - install viruses to it, even encrypt the files. VirtualBox even has a video capture feature that can create a movie file of everything he does. He shouldn't be able to get out of the honeypot (unless you have fileservers with weak passwords on your home network, but that's assuming he even looks).
After he's done, or if your VM reaches 90 days old, just revert back to your snapshot to reset everything. Now you've got a clean VM and your 90 day timer is reset.
Have fun!