Installation
- Download latest Nucleus Co-op from the Github releases page:
Create a folder named "NucleusCo-op" or similar in the root of your C:/ drive, then add it to the Microsoft defender exclusions list.
Copy the NucleusApp.zip to this folder then right click, properties -> unblock the zip (if needed) and extract the files there using 7-Zip (password:
nucleus), don't use the default Windows extraction tool as it can cause issues.Alternatively you can use the Installer.exe to extract the Nucleus Co-op files to the correct folder.
Note: Some Nucleus Co-op hook dlls and Goldberg emulator, used by Nucleus, can sometimes be detected as potential threats by Microsoft Defender and other anti-viruses or web browsers: this is 100% a false positive see here and here for more information. You have to allow Nucleus Co-op as an exception in Microsoft Defender before extracting. Do not overwrite older Nucleus Co-op versions files with new ones, make a clean install.
Run NucleusCoop.exe, if you get a "Win32Exception the operation was canceled by the user" error when launching a handler in Nucleus Co-op files run every .exe file in there (like StartGame.exe for example) and accept the UAC prompts if they show.
Keep the following in mind about your Nucleus Co-op folder:
DO NOT place Nucleus Co-op inside a folder containing files for a game you wish to play.
Avoid placing it inside a folder that has security settings applied to it, such as Program Files, Program Files (x86).
Some handlers require the Nucleus Co-op folder to be located in the same drive as the game files.
If you are still unsure where to place the folder, the root of your main drive (C:/NucleusCo-op) is the best option.