tyfdesign

When activated, this plugin: 
1. Closes comments and pings on all existing public content (posts, pages, and custom post types). 
2. Sets WordPress defaults to disallow new comments and pings on all future content. 
3. Ensures that newly created or updated posts remain closed to comments. 
4. Hides the default Comments menu in the admin sidebar when enabled. 
5. Provides a simple Settings page with a single Activate / Deactivate button to toggle behavior.
When deactivated, the plugin restores the default WordPress discussion settings without reopening previously closed comments.
Created by TYF Design.

Do Not Allow Comments Everywhere

A lightweight plugin that globally disables comments and pings across all WordPress content - past and future.

Access Keys

Comments Disable – AccessPress is a plugin to disable comments globally.This plugin allows administrators to globally disable comments on any post type (posts, pages, attachments, etc.) so that these settings need not to be configured for individual posts. It also removes all comment-related fields from edit and quick-edit screens.In simple words, just with one click you can disable the comments in whole site without having any burden to disable the comments on each posts individually.
<h4>Some Useful Links</h4>
<ul>
<li>Support Email: support@accesspressthemes.com</li>
<li>Support Forum Link: http://accesspressthemes.com/support/</li>
<li>Youtube channel link: https://www.youtube.com/watch?v=TjZNcVG3fDE</li>
<li>Facebook link: https://www.facebook.com/AccessPressThemes </li>
</ul>
For a easy installation guide checkout the Installation tab above.

Comments Disable – AccessPress

Disable comments on site globally with just one click. Comments can be disabled according to post type.

Do Not Allow Comments Everywhere vs Comments Disable – AccessPress