TeamViewer oscillate between two different IDs

[Frederic]

Hello everyone,

I have TeamViewer installed on an old computer. Recently, I noticed that the its TeamViewer ID changed. I thought that the ID had changed after an update of the TeamViewer software, so I just edited the ID for this contact in my teamviewer account. But now, the computer keeps switching from one ID to the other.

Has anyone experienced this before? Any way to fix this?

Thanks!

[matt]

Is there a remote desktop connection (or Terminal Services connection) to this computer?

[Frederic]

Hello Matt,

This computer has a Windows OS, so Remote Desktop is installed by default. But the computer does not have a static IP, so I don't think I could connect to it through remote desktop unless I am at home and go check its IP.

Why are you asking this question? Are you suggesting that I use remote desktop to find the TV-ID? Or have you seen this problem of a same computer having multiple IDs before and it was related to the use of Remote Desktop?

Frederic

[matt]

Or have you seen this problem of a same computer having multiple IDs before and it was related to the use of Remote Desktop?

This one.

I can install Teamviewer Full (with Unattended access) on a Terminal Server and get a Teamviewer ID that gets me to the 'console'.
I can have a Remote Desktop user run Teamviewer, for me to connect and help them  with something, and I get a different, but consistent, Teamviewer ID.

btw, remote desktop (as a server) IS NOT installed by default. It must be activated on all Windows server + workstation machines
Remote desktop client is installed on all windows machines

[Frederic]

Hello Matt,

Thank you for your comment.

I can install Teamviewer Full (with Unattended access) on a Terminal Server and get a Teamviewer ID that gets me to the 'console'.

I haven't tried that (intalling TV for the console access), but I looked at the hypothesis that Remote Desktop could be involved in the double TV ID. I have tried uninstalling TV and reinstalling it either from Remote Desktop connection or from direct access to the computer; and I tried stopping TV processes and restarting them either from Remote Desktop or from direct connection to the computer. I have seen no difference. (I used Remote Desktop to connect as a 'normal' user though, not to connect to the console like you mentioned.)
But in the process of doing that, I realized that TV has one ID if it starts automatically with Windows, and it has another one if it is started by a user. So if the computer is rebooted, TV will have one ID and if for some reason, the process is restarted by an user, it will have another ID. The ID that TV takes when it starts automatically with windows is the 'new' one (i.e. the one that appeared recently).
Does that seem normal or should I be worried about a security problem (something malicious somehow changing TV ID at boot time)?

Best,
Frederic