Avoid having to separately sign in to separate-domain sites of the same multisite installation!
As of April 2026, Multisite Multidomain Single Sign On is a WordPress domain plugin with 80 active installations and a 4.8/5 rating from 9 reviews. It has been downloaded 6.7K+ times in total. Requires WordPress 5.0+ and PHP 7.0+. Available on WordPress.org since 2020. Last updated 2 years ago — may have compatibility concerns. Top alternative: Go Live Update Urls.
When switching sites using the My Sites links in the admin menu,
this plugin will automatically authenticate you into the site that you’re going to.
You do already have to be logged into a site in the network;
this plugin just cuts down on having to log in again due to cookie isolation between domains.
Note: This plugin must be installed on all sites in a network in order to work properly.
Want to change how this plugin works, or add to it? Fork it on GitHub!
| WordPress | 5.0+ requiredTested up to 6.4.8 |
| PHP | 7.0+ required |
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.