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: 
Try to change the **MAC Addresses** for Cloned PCs

TeamViewer ID depends on it for sure.
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!