Is SHAR multiplayer trusted?

Please login to contribute to the conversation.
whenever I download it, and run the program, my computer detects a virus or a threat on it...
It is safe and trusted, given you are downloading the official version of it from Donut Team's website. Any warnings are false positives.
Just keep on loading it, it will eventually let you play it.
Just to add onto what @DeepFriedBurger said. The reason why it's showing up as a virus is because the launcher opens up the executable and makes temporary changes to it in order to get multiplayer to run. Your computer thinks its a threat as malicious software can sometimes infect you computer by using this method. However this time, Its nothing to worry about.