Thanks. I’ve sent in the diagnostic report (turning off hot keys didn’t solve the issue). However, I have a feeling the issue is something to do with the guy’s computer. The keyboard works fine on other machines. On this machine, even when I remove the VIE keyboard (already available through Windows 10 language settings) then set the input language to English, it still produced V characters. For example, typing a vowel followed by ‘s’ puts a district above the vowel (not v + ‘s’), or when I double tap ‘e’ it produces ‘e’ + diacritic. I think this is the excited behaviour of the VIE keyboard but it’s happening even when I attempt to remove that keyboard and select ENG. Additionally, when I removed VIE, then clicked on input method icon on bottom task bar, ENG and VIE we’re there, VI (Keyman keyboard) was fine, even though it was VIE I removed, not VI. Additionally again, I removed the VIE keyboard yesterday but it reappeared on restart. All this to say, is battening on this particular machine and no others and there are these additional behaviours.