Error "The product is unable to start due to an internal licensing error" When Opening Tableau Desktop

Option 1

Work with your IT team to temporarily disable any anti-virus or malware software running on the computer, and then attempt to install the software again.
 

Option 2

Work with your IT team to have security configuration or third-party software applications uninstalled before installing Tableau Desktop again.

A security configuration, or applications like T4 for ROM-Win can prevent direct writing to a hard disk in order to not leave data on the machine. Consequently, permanent data changes such as deletions and uninstalls can be difficult to make.  
 

Option 3 - Windows

If after attempting the above options you are still unable to install, launch or activate Tableau Desktop successfully, please work with you IT team in order to detect if the issue is coming from the Operating System. For more information, see the following Microsoft article: Fix problems that block programs from being installed or removed.

Note: Make a backup of the registry before you make any changes to it. Serious issues may occur if the registry is modified incorrectly. Troubleshooting Windows registry edits is outside the scope of Tableau Technical Support.
 

Option 4

Before performing a clean installation of Tableau Desktop and using Windows, try repairing the software in the Control Panel. Lastly, perform a clean installation of Tableau Desktop by completely removing the software.  Please see the instructions for both macOS and Windows here.  

Reinstall Tableau Desktop as an Administrator. Find the downloads for each available version on the Tableau Release website.