Hello,

I wanted to update Studio 2017 to 2021 on my desktop, and when I tried, I got the following message: "Could not write value to key... Verify that you have sufficient access to that key, or contact  your support personnel." 

Ignore did not help, and when I tried with "Abort" I got the following message - "Set up did not complete. The error is: Package "Trados Studio 2021 SR" could not be installed. Fatal error during installation. Error number: 1603."

Do you perhaps have any suggestions as to how this issue could be resolved?

Thank you in advance.

Best regards,

Olivera