The latest version still uses the same key for OptionPasswordAES but appears to have changed how the Unattended Access password is stored.

With versions before v9.x, this allowed for attackers to decrypt the Unattended Access password to the system (which allows for remote login to the system as well as headless file browsing). If an attacker were to know this key, they could decrypt protect information stored in the registry or configuration files of TeamViewer. It used a shared AES key for all installations since at least as far back as v8, and used it for at least OptionsPasswordAES in the current version of the product. Therefore I would highly recommend testing with a licensed version before purchasing it in your environment.TeamViewer Desktop through allows a bypass of remote-login access control because the same key is used for different customers' installations. You can continue using the last supported version of TeamViewer on those operating systems, but we are no longer providing updates or fixes which are specific to them.

They will give you the best option in your case.įinally, please note that we are no longer actively servicing Windows XP. If you are interested in a TeamViewer license, please feel free to contact our sales team. This manual might be helpful for your family in order to update manually.Īlso please note that if you have a paid license, TeamViewer is always backward compatible licensed versions can always connect to older versions. If you would like to continue using TeamViewer for free, there is no way to update the software remotely at this stage. We are asking our free users who sue the software with older versions of TeamViewer to update to the latest version in order to continue using the software.

Team viewer old version