Why would this be happening? Every link I click on on my site results in the homepage again. You can check it out here: http://www.whatamidoingonline.com
What is going on here? This just started all of a sudden this morning. I have tried deactivating all plugins (changing plugin directory name), tried publishing new posts and pages, etc..
The problem was caused by a plugin that was supposed to fix a permalink problem, so I deactivated the plugin and the old problem still persisted. Go to my site and click on any of the blog posts, you'll see they result in a 404 error. When I first saw this, I tried yout method. I changed the permalink structure and they worked! but changing them back broke them again. I can't change the permalink structure permanently because of link building and social media stuff I have already done.