Hi, thank you both for the logs, I was able to discard some theories about what could be wrong but I'm still not sure what's happening.
I've been researching and there's no certainty yet, but there's a couple of thing we can check, I need you to open your command prompt as administrator and run this 3 commands:
winver : I'ts gonna open an about window and I need you to tell me the OS build version, in my case is 17134.590
dir C:\Windows\Microsoft.NET\Framework : Then paste the answer of that command here
net start server : Then paste the answer here and try to install prey again
Thank you again, sorry for all the trouble