Microsoft provides a free copy of windows that is intended for testing IE11 and Microsoft Edge Legacy. The licence is valid for 90 days, and they recommend setting a snapshot when you first install the virtual machine which you can roll back to later. This makes it a perfect testing environment for free.
This guide provides instructions on how to set it up with ESXi and download file/registry monitoring tools.
Install and set initial snapshot:
VMwarefile from Microsoft to your local machine
Deploy a virtual machine from an OVF or OVA file
Power on automatically
Virtual Machineson the sidebar and click on the current VM
Expose hardware assisted virtualization to the guest OS
Edit notesto contain the password:
Network adapter 1) and desired hostname
Virtual Machines> This VM
Yesor let it restart automatically
Passw0rd!as the password
Capture Read Events
VMwarefile from Microsoft