possible to run multiple different versions on same PC ?

Hi, Is it possible to install a second version using the .exe installer ?

Reason is that I have 5.4.2 running and after 4 months of Proxy issues i can finally connect to my local LLM, however when the IT department added 5.5 using the Full program zip I am unable to install python based extension. Being able try installation using the .exe for 5.5 might help but I am loath to lose a working Knime AP

Thanks