Failed reinstallation: Unexpected Failure in product state 2

Question

Hello, 
 after downloading some kind of Video converting freeware it downloadet many strange programs and adware in the background without my permission. Then it killed Sophus so it said, that there was a critical failure with the installation (but it was not installing anyting). Many strange chinese popus annoyed me so i loadet a recoverey from this day but before the installation of this strange freeware. After this the adware (is hopefully) away. But i wanted to make sure it is away so i tryed starting Sophus but it did not work anymore. So i uninstalled it and I tried reinstalling it. While installing it there was a error : There was an unexpected problem installing Sophos Endpoint Security and Controll. Details: unexpected productstore 2 for product with code: {788B9788-7F03-4A2B-8258-3445C0278C33} 
 I allready searched the registry for this string"{788B9788-7F03-4A2B-8258-3445C0278C33}", but it did not find anything

Haridoss Sreenivasan · Answer

Hi Florence, 
 From the log "check for existing installation of Sophos Anti-Virus for XP or Sophos AutoUpdate ..." I see that the installation is failing due to the left overs from the previous uninstall. Perform a clean uninstall again to restart the machine and reinstall Sophos Endpoint. Please refer to the article How to uninstall Sophos Endpoint Security and Control from the command line or with a batch file . Let me know if this helps resolve your issue.

Florian von Oepen · Answer

Ok i did find a Solution without wiping the computer. I searched for different uninstall-Scrips for Sophus. This was the only one that did work for me (you need to additionally download a exe [simply look in the comments]) but it did work now :D Here is the link to the Forum: 
 https://gist.github.com/Coopeh/8470068