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  • I don't know what else to suggest because this is all I had to do earlier this week to fix the same problem but the commercial trial I had installed as for v11 and I was running the freeware v12 afterwards. This is on Win10 Pro 64-bit Creator's Update on a domain.
  • For Windows, delete all the previous TeamViewer config info in %appdata% etc that are left behind even after an official uninstall. If you can't see hidden files, use something like's Everything. Then you can reinstall the Free version.
  • Hi, You have to scour the HD and delete it of the previous config files. I use's Everything tool to find the TeamVewer stuff in %appdata% before reinstalling the free version.