After upgrading to latest posted version, on launch, it shows an ! on the systray icon while the Teamviewer interface appears. After about 3 seconds, Teamviewer shuts down. No obvious error messages that I can see, or strange dialogs.
Multiple reboots, no dice.
I tried completely uninstalling Teamviewer and deleting all folder references I could find, then reinstalled newest version. Same thing. (Did not look for any registry keys, tho). After uninstalling the latest version again, and reinstalling an old version -15.7.7 - that one launches no problem.
Suggestions? Thanks! : )