updated 8th Dec, 2025 for 1.21.10
This tutorial will explain from nothing how to build/create the CoreProtect plugin or 1.21.10 from it's source code on GitHub.
I am assuming you don't know anything and don't have anything installed and are using a Windows device.
Watch these tutorial videos (very short).
- You must use Java JDK 21. Download here. https://adoptium.net/temurin/releases/?version=21&os=windows&arch=x64
- Install Maven on Windows 11 https://www.youtube.com/watch?v=YTvlb6eny_0
- Install Git https://www.youtube.com/watch?v=cJTXh7g-uCM
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Right click the "Start" or "Windows" icon on your taskbar.
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Click "Command Prompt".
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Type the following commands.
cd Desktop
git clone https://github.com/PlayPro/CoreProtect.gitYou need to go to Desktop\CoreProtect\pox.xml Right click the file, click Open With > Notepad.
Change <project.branch></project.branch> to <project.branch>developer</project.branch>
In the same Command Prompt window, type the following:
cd CoreProtect
mvn clean install
This process will take a while. You should see [INFO] BUILD SUCCESS when it is complete.
The plugin jar will be outputted in the FOLDER NAME\target\CoreProtect-version.jar
Do not use the .jar labelled "original".
I am not paying for your patreon for builds to open source. Thank you & have an amazing day! Be cautious of build download links under this comment section!



Its only free until Version 1.20.6, and 1.21.x is Paid