Question: Today I was cloning a couple of images of Ubuntu to further expand the use of Ubuntu over the company but just noticed that all cloned PCs have the same Teamviewer ID. I followed teamviewer forum suggestion about purging teamviewer, removing the .config/teamviewer9 folder and even the /opt/teamviewer one with no luck. The ID stays the same even after rebooting or waiting for about 30 mins before installing teamviewer again.

How can I reset/change the Teamviewer ID in Ubuntu for all the cloned computers. Right now I am using the latest version of Teamviewer (Version 9).

Answer: 
Close TeamViewer. Then run in the terminal:

```
sudo teamviewer --daemon stop
sudo rm -f /opt/teamviewer9/config/global.conf
sudo teamviewer --daemon start

```

Edit: I checked, and TeamViewer also looks at your MAC address. It probably works like this. When you first start TeamViewer (with no configuration files available), it looks up your MAC address. If it is not known by TV, it creates a new TeamViewer ID and associates your MAC address with it. If the MAC address is known, you get the teamviewer ID associated with it.

So, if you clone to a new computer, the commands above would help you get a new ID. If you use them on the original computer, you'll get the same ID.
A solution is:

Modify /etc/systemd/system/teamviewerd.service:

```
[Unit]
Description = TeamViewer remote control daemon
After = NetworkManager-wait-online.service network.target network-online.target dbus.service
Wants = NetworkManager-wait-online.service network-online.target
Requires = dbus.service

[Service]
Type = forking
PIDFile = /var/run/teamviewerd.pid
ExecStartPre= /sbin/ifconfig eth0 hw ether aa:bb:cc:dd:ee:ff
ExecStart = /opt/teamviewer/tv_bin/teamviewerd -d
ExecStartPost = /usr/local/sbin/restoremac.sh
Restart = on-abort
StartLimitInterval = 60
StartLimitBurst = 10

[Install]
WantedBy = multi-user.target

```

Replacing eth0 with your interface and aa:bb:cc:dd:ee:ff with a new MAC.

Create a script cat /usr/local/sbin/restoremac.sh:

```
#!/bin/sh
/bin/sleep 2
/sbin/ifconfig eth0 hw ether ff:ee:dd:cc:bb:aa

```

Replacing eth0 with your interface and ff:ee:dd:cc:bb:aa with original MAC.

Use "chmod 755 /usr/local/sbin/restoremac.sh"

Delete /etc/teamviewer/global.conf

Restart machine

You can keep your MAC and change TeamViewr ID.

If you using teamviewer for personal use only, and you have message "Commercial Use Suspected", this solve the problem!

IF YOU USE IT ONLY FOR NOT COMMERCIAL SCOPE!