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#131
Welcome to the Seven Forums.
As others have mentioned: the password/passcode that TeamViewer creates is indeed a temporary one. So, yes, TeamViewer generates a new password/passcode each time that TeamViewer starts. You don't even have to shut the computer down or even log off, just exit TeamViewer. When you restart TeamViewer, it will have a new password/passcode. Also, a remote person cannot run thru all 9999 possible codes to get back in. TeamViewer prevents such action really well.
However, TeamViewer can be configured to start whenever Windows starts. If TeamViewer is set to do this, it will ask for a new (permanent) password. The scammers might have set such a password and told TeamViewer to always start. It sounds like the Geek Squad uninstalled TeamViewer for you. Unfortunately, we do not know if the Geek Squad told the uninstall process to remove TeamViewer's settings. If TeamViewer's settings remain on the computer, then those old settings would be used again if TeamViewer ever got installed again. (The computer ID will most likely remain the same each time TeamViewer is installed.)
I would suggest that you call and have them re-install TeamViewer. Then you install TeamViewer for mac (Free TeamViewer Download for Mac). When they run into trouble, you can see what they see and maybe help them out a bit. You might not be totally up to speed on various Windows things, but we are here to help you with that.
If they install TeamViewer again, ask them if the password/passcode is four numbers. If it is, then TeamViewer is NOT set to start each time Windows starts. If TeamViewer is set to always start, then the temporary password/passcode that users see on the main TeamViewer screen will be changed to use 6 characters (a mixture of numbers and letters).
If you set TeamViewer to run all of the time on their computer - then you connect (and control it) at your convenience - thus allowing us to help you to help them. If you put TeamViewer in this mode, you will be selecting a password of your own to use. Please pick a good one