Thanks for your post!
We have had issues where TeamViewer 12 is bringing up a false positive. A few weeks ago, we had the universal virus databases updated, however depending on your antivirus provider, this can take some time to update.See here for a previous post: https://community.teamviewer.com/t5/TeamViewer-12/AVG-claims-that-Teamviewer-download-contains-a-trojan/m-p/1168/highlight/true#M18
I hope this helps!
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