Installation of Studio 2021 fails

Hi

Installation of Studio 2021 fails and I get the error message "Setup did not complete. The error is: Package 'SDL Trados Studio 2021 SR1' could not be installed. Error number: 1603.

I searched for some answers - such as C:\ProgramData\SafeNet Sentinel\Sentinel RMS Development Kit  but this does not seem to exist on my computer.

So what should I do now?

Thanks

Alison