I have a standalone Master Collection license. I'm getting the activation error screen saying too many devices are activated. I don't have access to the old computers. I need to clear all activations so I can activate on my current computer.

and your adobe account isn’t relevant to activated devices 

Short version:

Since you no longer have access to the old computers to deactivate, you can’t restore any activations.

If you can’t access the old machines, then it’s unlikely you’ll be able to deactivate your licenses. The software is too antique and the infrastructure isn’t there anymore.

If there are any known tricks to achieve this, I’m sure others will chime in.

Thank you for your question, Ramonashires.

I understand how frustrating it can be to run into an activation limit when you no longer have access to your previous computers.

Based on the information you shared, it appears that your Master Collection license has reached its activation limit. If you still have access to any of the previously activated computers, you can deactivate the software on those devices and then activate it on your current computer.

Please see for additional information about managing the activations included with your purchase, Ramonashires:

Activation limit reached for non-subscription Adobe desktop applications

Please update this discussion thread if you have any additional questions, Ramonashires. ^JW