"setup has detected a different version of this product already installed"

Question

Having purchased Trados Studio 2024, I would like to uninstall my previous Studio 2021 version before in order to obtain a clean installation. Trying to unstall Studio 2021 using the installer ("chainer") my system returns the message mentioned in the subject. 
 
 I am aware that I am not the first person to encounter this problem, so I tried the fixes suggested in previous postings--however, to no avail: 
 
 1) I renamed the System folder to System_old in C:\ProgramData\SafeNet Sentinel\Sentinel RMS Development Kit 
 2) Entering lsinit.exe &ndash;debug in C:\ProgramData\Package Cache\SDL\SDLTradosStudio2021SR2 returns to result 
 3) I started the the RemoveStudio.ps1 powershell script as administrator, with no result either. 
 
 What else is there to do to successfully clean my registry?

Elisa Maxim · Answer

Thorsten Seßler We will be pleased to help you with this problem so have logged a support case on your behalf. We do prioritise customers who have a support contract so please keep in mind it could take up to 48 hours, especially over a weekend, but rest assured we will contact you as soon as we can. You will be contacted at the email address used for this Community. Support Case Id : CS0004181.

Elisa Maxim | RWS Group

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Trados Portfolio > 2. Licensing and Installation

"setup has detected a different version of this product already installed"