Sometime when we create a project or install a package to our existing project ,face this warning. It is a warning statement from composer to user that your composer is not up to date.
Warning: This development build of composer is over 60 days old. It is recommended to update it by running "C:\ProgramData\ComposerSetup\bin\composer.phar self-update" to get the latest version.
Really you should make your composer up to date to use newer versions of libraries that are compatible with your package
How to remove it ?
If you are using XAMPP server, Go to your command promt or terminal and find your xampp/htdocs or if you are using WAMP server, find out wamp/www directory and type the following command
After typing the above command press enter key and you see your composer will start update to a newer version.when downloading reach to 100%, your composer has updated.
If you have any question, feel free to ask me .