I am trying to install Trados Studio 2021 SR2 (version 16.x) on my PC after having uninstalled Trados Studio 2022. However, every time I run the installer I get the following error:

"Setup has detected a higher version of this product already installed. If you still wish to install this version, you must remove the other version first."

What I have already tried: - Uninstalled Trados Studio 2022 via Windows Settings → Apps - Used Revo Uninstaller to force remove any leftover components - Manually searched and deleted all Trados/SDL/RWS related entries in the Windows Registry (HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER and WOW6432Node) - Checked and deleted leftover files in Program Files and ProgramData - Run the Trados Studio 2021 SR2 installer as Administrator

Trados Studio 2022 no longer appears in Windows Apps or Programs and Features, and I cannot find any remaining registry entries related to it. Despite all of this, the error persists.

I have read that RWS has a dedicated cleanup script for these situations — could anyone point me to it or suggest what else I can try?

Thank you!