Ga Satrya

Remove dashboard access to non-admin users and easily control who can access your WordPress dashboard with simple configuration. By default, only administrators are allowed, but you can now whitelist specific trusted users by username—perfect for developers, VAs, or contractors.
Features include:
<ul>
<li>Whitelist specific users by username</li>
<li>Session expiration controls (1-24 hours)</li>
<li>Option to apply session timeout to administrators</li>
<li>Custom redirect URL for blocked users</li>
<li>Secure, validated, and sanitized settings</li>
<li>Hide admin toolbar for non-authorized users</li>
<li>Developer-friendly filters for advanced customization</li>
</ul>
Why Choose UserFlow?
<ul>
<li>Maximum Protection: Instantly block unauthorized users from accessing sensitive dashboard areas.</li>
<li>Effortless Whitelisting: Grant dashboard access to trusted users (developers, VAs, contractors) without changing their roles. Just add their usernames!</li>
<li>Session Security: Automatically log out users after a set period for bulletproof session management. Choose from multiple timeout intervals and apply to all users or just non-admins.</li>
<li>Custom Redirects: Guide blocked users to a branded page or helpful resource instead of the generic homepage.</li>
<li>Zero Configuration Needed: Works out of the box—only administrators can access the dashboard until you customize settings.</li>
</ul>
Perfect For:
<ul>
<li>Website owners who want peace of mind</li>
<li>Agencies and developers managing multiple sites</li>
<li>Teams needing granular dashboard access</li>
<li>Anyone serious about WordPress security</li>
</ul>
Protect your site, empower your workflow, and deliver a professional experience—all with one lightweight plugin.
<a href="https://www.ctaflow.com/plugins/admin-only-dashboard/" rel="nofollow ugc">Read more detail</a>

UserFlow – Disable Dashboard Access for Non Admin

UserFlow: Only admins can access the dashboard by default. Whitelist trusted users easily, quick setup, and secure.

rafasashi

User Session Synchronizer allows you to keep the user logged in from one wordpress to another by synchronizing user data and cookie session based on a verified email. 
The user email is encrypted based on the current user ip and a secret key shared by the synchronized wordpress installations.
<h4>Features</h4>
<ul>
<li>Synchronize session between installations</li>
<li>Verify user email through new registration</li>
<li>Verify user email through manual admin action</li>
<li>Verify user email through email verification code</li>
<li>Prevent user form changing email</li>
<li>Display historical sessions</li>
<li>Auto add new subscriber if user doesn’t exist</li>
<li>Destroy session everywhere on logging out</li>
</ul>
<h4>Upcoming</h4>
<ul>
<li>Multiple secret keys & networks</li>
<li>Enable ajax cross-domain requests</li>
</ul>

User Session Synchronizer

a very clever solution that works flawlessly. great job

perfect work

This plugin works extremely well. 

I am seriously impressed that it does what it says it does. 

The only thing it needs is some better documentation for initial setup. Further, it needs documentation as to what the "User Verify" menu item is for, and the "Email Template".

I thought that was required for users to "verify" themselves to the secondary site.  I think it's just an extra utility to make sure users have valid emails. Seems unnecessary as part of this plugin.

Brilliant! Needs better documetnation

Keep the user logged in from one wordpress to another by synchronizing user data and cookie session

UserFlow – Disable Dashboard Access for Non Admin vs User Session Synchronizer