If you have forgotten a user password, you can reset it if you have another user with configuration rights. As the last radical solution follow these steps to delete the user database user.sql:
Linux
Login using SSH and run:
sudo service RepetierServer stop sudo rm /var/lib/Repetier-Server/database/user.sql sudo service RepetierServer start
Mac
Open terminal and run:
# Stop server sudo launchctl unload /Library/LaunchDaemons/com.repetier-server.RepetierServer.plist # Remove user database sudo rm "/Library/Application Support/Repetier-Server/database/user.sql" # Start server sudo launchctl load /Library/LaunchDaemons/com.repetier-server.RepetierServer.plist
Windows
Stop Repetier-Server: Open Stop Server in Windows start menu.
Delete the file C:\ProgramData\Repetier-Server\database\user.sql
Start Repetier-Server: Open Start Server in Windows start menu.