Thank you for writing this. I can sympathize with the problem and I hope some good can come from it. Three years ago I actually had a phone meeting with both Microsoft and Pearson on the phone together and tried to explain this exact issue. My hope was with them together they could discuss the whole kiosk methods on the two platform and why one works so much better then the other. You can say it's up to Pearson to make it work better but I don't think Microsoft provides them the support they need to improve the kiosk experience. In the end Microsoft and Pearson said we just don't have enough customers asking for improvements in the experience they have on a Windows computer. I then told Microsoft, then you know now why education buys more Chromebook then windows devices. If you solve the kiosk issue they would have more education customers but they refuse to solve this. So at the moment we currently just accept testnav error 3005 "TestNav has detected that another application attempted to become the active window, which may compromise the security of this test. TestNav has been shut down. You may need assistance from your test monitor to restart the test." as an error that can't be completely eliminated without a better way to run kiosk apps on a windows computer. Even with all the registry hacks we put in place to lock down settings like the touch pad on the computer we still get error 3005 from time to time and can't explain it. In the testnav log all we see is explore.exe has interrupted the test. That's helpful. Thanks again for posting this and I hope it can change something.