Nice, I thought there must be a native virtual environment option in Windows 11, over and above comparability mode, but the guides I started looking at were listing multiple third party options like VMware etc etc. I'll take another look at it now I know to try Hyper-V.After a couple of hours of fiddling today, I managed to get TIS working on a Windows 11 machine in a virtual XP environment via Microsoft's Hyper-V. Bit of a learning curve there at every step but it worked out. VMWare might have been easier, but I started with Hyper-V and persevered. Windows 7 may also have been a better idea than XP, but I hadn't realised it worked on that version until I looked back at a post here.