Google has been working with developers to migrate their Google Apps Marketplace apps from OAuth1.0 to OAuth2.0. This change improves integration, discovery, distribution, security, and management of third-party apps. Google officially deprecated OAuth1.0 in April 2012 (see here), and we’re moving toward the end of this deprecation timeline for the Google Apps Marketplace.
In most cases, app developers have already worked with their customers to migrate to OAuth2.0. However, for those apps that have not been migrated the following announcements apply:
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On September 30, 2014, Google will no longer enable any new installs of OAuth1.0 apps and these apps will be removed from the Google Apps Marketplace. However, previously installed OAuth1.0 apps will continue to work.
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On April 20, 2015, if your application provider has not completed your migration to their OAuth 2.0 app then the single single-on functionality will stop working and the app icon will no longer appear in the app launcher.
To check whether the apps you use from Google Apps Marketplace have migrated to OAuth2.0, go to admin.google.com and click on “Google Apps Marketplace”. Apps that are listed here are using OAuth2.0 and are either fully migrated or in the process of migrating.
If you have any questions about your application provider’s plans for migration prior to April 20, 2015, we encourage you to reach out to them directly.
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