HiMarina Duarte , thank you for the post! 

Engineering and technical support for Trados Studio 2011 and MultiTerm Desktop 2011 ended on December 30, 2015. From this date, services covered under standard agreements, including technical support and licensing support, are no longer available.

Engineering and technical support for Trados Studio 2014 and MultiTerm Desktop 2014 ended on June 30, 2017. From this date, services covered under standard maintenance agreements - including technical support, license resets, updates and new patches - are no longer available.

For more details please read this article about Trados Studio Product Release Policy

For the older versions of Trados help and assistance are provided via the RWS Community community.rws.com/.../

RWS recommends that you move to the latest version of Trados Studio. For more details, please go to

https://www.trados.com/pricing/

I also want to mention that if you decide to use one of your activations, please note that it may not be compatible with the latest Windows operating system.

Best regards,

Ionut

Thanks for your message, Andrei.

The trial period works fine. The problem arises when I try to activate the licence and the offline certificate generation process does not work either. I don't know what I can do.

Thanks for your help.

Marina 

Please be aware that Trados 2011 has not been tested on the latest versions of Windows, so the error may be due to compatibility issues with the operating system: - Windows Operating Systems supported per product (Trados Studio, Multiterm, Passolo) - RWS Customer Support

Please be aware that Trados 2011 has not been tested on the latest versions of Windows, so the error may be due to compatibility issues with the operating system: - Windows Operating Systems supported per product (Trados Studio, Multiterm, Passolo) - RWS Customer Support