= New School =
If you're running at least [[MediaWiki]] 1.27<ref name="wikireport">Check your version, and more, for free at https://freephile.org/wikireport</ref>, you can take advantage of Cindy Cicalese's [[mw:Extension:PluggableAuth|Extension:PluggableAuth]] and [[mw:Extension:OpenID_Connect|Extension:OpenID_Connect]]. Using these extensions, you can have people login to your wiki using their Google account; and other '''Single Sign-On''' setups.
= Old School =
If you're running an older version<ref name="wikireport"></ref> of [[MediaWiki]] (<1.27) you probably can't run the (unmaintained) [[mw:Extension:OpenID]]. As a workaround, you could switch over to an LDAP based auth. Or, just upgrade already!
Google deprecated it's support for OpenID 2.0 support. They now implement "[[wp:OpenID Connect|OpenID Connect]]" (official site: http://openid.net/connect/) Unfortunately, Evan Prodromou's MediaWiki [[mw:Extension:OpenID|Extension:OpenID]] extension is written for OpenID 2.0 So, to wiki's that used Google as an Identity/Auth provider must now switch to LDAP or other means. Fortunately, there isn't too much work to do if you have an [[LDAP]] server in place.
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