Good to hear some have not had a problem. My TMG8 boots up but lost its identity so to speak. It only recognises my first name and has lost all my other information and thinks it is an EXPIRED TRIAL VERSION after upgrading to Windows 10. Now for clarity I did have a Ver TMG 9 downloaded to try right before the shutdown and never was able to consumate the deal. SO that trial was still on there. Can't figure out why it would confuse the two programs.