Dreamweaver CS6 friert ein

This is a major pain point for many legacy product users. 

• Old computers can't communicate with Adobe's servers to deactivate licenses. 
• Many new computers can't run legacy activation routines.
• Too much has changed since 2012.

MODERN OPTIONS:

-- Adobe Dreamweaver CC - https://www.adobe.com/products/dreamweaver.html
-- Codespaces (free, browser-based) - https://github.com/features/codespaces
-- Notepad++ (free) - https://notepad-plus-plus.org/
-- Nova (Mac only, formerly called Coda) - https://nova.app/
-- Pinegrow - https://pinegrow.com/
-- Sublime Text - http://www.sublimetext.com/
-- Visual Studio Code (free) - https://code.visualstudio.com/
-- Wappler ~ Visual Web App Builder - https://wappler.io/

In order to do a new installation of DW on a new computer, you must first have deactivated one of your previous installations as only 2 are allowed. If you did not deactivate prior installations such as from selling a computer, having a computer lost due to a crash, etc. then unfortunately at this point you don't have any other options other than to upgrade to the latest subscription version or consider alternatives as Adobe no longer resets activation counts.