If you don’t want comments on your posts, turn off the ability for people to make them. You can do this on individual posts but this is where the wonderful Quick Edit function shines again.
(If you do want comments on your Posts – follow the same steps but turn the comments on)
Go to All Posts and choose Bulk Actions
Tick the Title Box
When you tick that Title box, every post is ticked. Go on, try it.
Click on the Bulk Action dropdown box
Now click on Apply
Everything opens up for you
What you’re looking for is the Comments box
Now you can turn off the ability for people to comment on your posts.
How many posts do you have? It depends on how your computer is set, this site has 12 pages of posts, so I’d have to repeat all that 12 times.
Don’t forget to click the Update button!