Do you use TeamViewer to assist friends with their PC’s without charging them and yet you’ve received the “Commercial Use Suspected” message. This should get you running again.
[This tutorial is not intended to bypass TeamViewer’s paid services. If you use it commercially, please pay for it.]


If you have problems with getting TeamViewer working again, please state what version of TeamViewer as well as what version of Windows.
Currently, Windows 10 doesn’t seem to take this fix.
[when typing in any of the following, remove the ‘ from before and after the text]

  • Uninstall TeamViewer using IObit Uninstaller or similar using the Powerful Scan (when installing IObit, make sure to deselect install Advanced System Care when the option comes up)
  • Click Start then type %appdata% – now delete the TeamViewer folder
  • Click Start the type %temp% and delete the contents of this folder as well as the X:\Windows\temp folder
  • Click Start then type regedit, delete the registry folder at HKEY_CURRENT_USER\Software\TeamViewer & HKEY_LOCAL_MACHINE\SOFTWARE\TeamViewer if any
  • Now change your MAC address, either manually or with a tool like TMAC [I suggest changing the MAC address on both network connections, i.e. wireless and LAN]
  • [You can try without this step first to see if it works.] Open a Command Prompt with Administrator rights, browse to where you saved ‘sidchg.exe or sidchg64.exe’ and run sidchg.exe /f /r /key:3YPCr-vF9fi-R2VB7-ef for 32-bit or sidchg64.exe /f /r /key:3YPCr-vF9fi-R2VB7-ef for 64-bit Windows, make sure there is a space between the f and following / – Get the latest key from this page. SIDCHG can take a while to run. You might need to set your date to the previous month for SIDCHG to work.
  • Your PC will restart automatically after running sidchg
  • Install TeamViewer [You’ll see your PC has a new TeamViewer ID]

Software

IObit Uninstaller

http://www.iobit.com/en/advanceduninstaller.php [Be aware that this may try install bloatware, watch during installation.]

Portable Version

http://portableapps.com/apps/utilities/iobit_uninstaller_portable

TMAC – Technitium MAC Address Changer

https://technitium.com/tmac/

SID Change Utility

You need at least version 2.0b to work with Windows 10
http://www.stratesave.com/html/downloads.html

SIDCHG Key

Latest key is on this page

TeamViewer

https://www.teamviewer.com/

Portable Version

http://portableapps.com/apps/utilities/teamviewer_portable

Manually changing your MAC Address in Windows

  • Right-click ‘My Computer’ or ‘This PC’ on your desktop and select Manage
  • Go to Device Manager
  • Select Network Adapters
  • Select and double-click on the adapter for which you want to change MAC address
  • You will find a properties window with multiple tab’s. Select ‘Advanced’ tab
  • Under ‘Property’, find ‘Network Address’ or ‘Locally Administered Address’
  • Now select value and put your 12 digit hexadecimal number
  • Press OK and exit.

Virtual Machine

I’ve been thinking about setting TeamViewer up under a virtual machine using VirtualBox, just haven’t had a chance to play with it.
https://www.virtualbox.org/wiki/Downloads

Past SIDCHG Codes

2018

  • February: 3WgcZ-6zzf5-hCZkB-cf

2017

  • January: 3jh4d-xBkJ2-l#$d0-uv
  • March: 3WgcZ-67jv5-hCZka-tJ

2016

  • May: 3hs9z-mbFv8-idbc3-3J
  • June: 3hs9z-mbFf8-idbc3-2f
  • August: 3UtEH-N1EfZ-j193d-1f
  • September: 3UtEH-N1EvZ-j193d-2J
  • October: 3UtEH-N1DZZ-j193d-3Z
  • November: 3XL4n-L1DJT-P97Vd-3v