I m using Magento 2.2.0 and trying to install B2B extension via composer require.
[InvalidArgumentException]
Could not find package magento/extension-b2b at any version for your minimum-stability (stable). Check the package spelling or your minimum-
stability
I used following link.
http://devdocs.magento.com/guides/v2.2/comp-mgr/install-extensions/b2b-installation.html
Best Answer
Make sure you purchased the extension from you Magento MarketPlace account.
If that's not the case make sure that your username and password are correct in the
auth.json
.Reference: https://getcomposer.org/doc/articles/http-basic-authentication.md