Hi there, thanks for posting this solution! It was helpful and I really appreciate finally finding the answer to what my ongoing problem has been! However, I do strongly feel the need to point out that it is absolutely CRAZY that the Team Viewer error does not explicitly inform you that this is what is happening. Seriously, how hard would it be for TV to simply say "Sorry, you're already signed in to Team Viewer on the maximum number of devices that a free account allows. Click here to upgrade to a business account..." Instead, we get a vague and generic error message that says "Computers & Contacts - Error: The e-mail and password you entered do not match any accounts on record" and we have to investigate for ourselves why this might be happening and **hopefully** come across this thread which has the solution. I bet you'd even get more people upgrading to business accounts if they knew straight away that it would allow them to sign in immediately!! It seems like an absolute no-brainer?
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