How to update Composer in Windows 10

I am using Composer for my PHP project. I am new to Composer. Now when I update my dependencies using composer update command, it is saying that my Composer version is too old and ask me to update. So I tried as below. But all failed.

My composer.phar file is in C:/ProgramData/ComposerSetup/bin/composer.phar

I opened terminal and tried

composer.phar update

php composer.phar update

composer C:/ProgramData/ComposerSetup/bin/composer.phar update

php composer C:/ProgramData/ComposerSetup/bin/composer.phar update

When I run composer-self-update, error as in screenshot.

All command failed. I am using XAMPP. There is no composer.phar file in xampp/php folder as well. How can I update Composer in Windows 10?

Try

composer self-update

If this doesn't work check your PATH variable, if it's not there try searching composer.bat in windows and add it to your PATH variable. Normally, its in following path.

C:\ProgramData\ComposerSetup\bin

Windows 10 update for Composer still works (end of 2020, pre version 2) with:

Follow This below Image:

composer self-update --1 it will be updated from 1.x

composer self-update --2 it will be updated from 2.x and from 1.x

composer self-update --rollback If you need to rollback to your previous version

composer -V For check your composer version

composer self-update:

If you run composer self-update from 1.x, it will warn you that a new stable major version of Composer is available, and you can use composer self-update --2 to migrate to it.

So run composer self-update --2

How easy is it to upgrade?

• Composer 2.0 still supports PHP 5.3 and above, much like Composer 1.x
• composer.lock files are interoperable between versions, so you can upgrade to 2.0 and roll back easily if needed.
• Most commands and arguments remain the same, and largely what you know about Composer remains true in 2.0.

Windows 10 update for Composer still works (end of 2020, pre version 2) with:

composer self-update

If you need to rollback to your previous version, you can do that with:

composer self-update --rollback