Jonathan Cobb 

I think the reason you don't have a button available for 2021 is because the system thinks you still have a licence available:

So we'll need to resolve the security error you are experiencing.  The error message "Could not establish SSL/TLS secure channel" typically occurs when there's an issue with the security protocols used for establishing a secure connection between your computer and the licensing server. There are a number of things that could cause this error, some of which would be:

1. Check your internet connection: Ensure that you have a stable internet connection, as connectivity issues can lead to this error.

2. Update Trados Studio: Make sure you have the latest version of Trados Studio 2021 installed.  The latest builds are:
   Trados Studio 2021 - 16.2.12.9338
   MultiTerm 2021 - 16.2.1.1044

3. Update your operating system: Ensure that your operating system (Windows, macOS, etc.) is up-to-date, as older versions might not support the latest security protocols.  For example if you still use W7 you definitely have a problem you'll only resolve by upgrading to a supported version of your operating system.

4. Check system date and time: Verify that your computer's date and time are set correctly. An incorrect system date and time can cause issues with SSL/TLS connections.

5. Update .NET Framework: Trados Studio requires .NET Framework to function properly. Make sure you have the latest version of .NET Framework installed on your system. You can download the latest version from the Microsoft website: https://dotnet.microsoft.com/en-us/download/dotnet-framework

Paul, many thanks for your answer - the problem is most likely no. 3, as my desktop is still running Windows 7 - it still runs fine, and I have no plans to 'upgrade'. Is there any way to make my win7 security compliant please? Many thanks, Jonathan

Jonathan Cobb 

You could try the resolution in this KB article as it provides a fix to the missing security protocol:

https://gateway.sdl.com/apex/communityknowledge?articleName=000015928

Or this one:

https://gateway.sdl.com/apex/communityknowledge?articleName=000013307

I cannot guarantee this will resolve all your problems as W7 is too old but it my help with this one.

Paul, my apologies- I did not reply to your message. This worked  fine, many thanks again for your help! Very best regards, Jonathan

No worries Jonathan Cobb ... important thing is you came back and confirmed which makes it easier for us to mark the thread as a verified answer.  You can also do this as it helps other users identify which answer helped.