I am facing an issue while browsing through my posts and getting 404 error. I have created a main domain and under it sub domain pointing to my various blogs. Each individual sub domain is working fine and opening the respected blog. BUT inside the blog when I clicking any post/ comment link its showing 404 error.
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@prax is the .htaccess (http://b2evolution.net/man/htaccess-file) file located at the root directory of your site?