After setting up this blog on WordPress 2.7, the time was for SEO Friendly URL’s and permalink structuring. With the default permalink structure, I could Easily navigate to older entries or Next Page at the bottom of my index page. But the same action gave me 404 error when I changed the permalinks to any of the custom settings for permalinks in WordPress.
When on the HomePage/ Blog Page/ Category page of your wordpres blog, there is a link at the bottom which helps us navigate through older entries, Few Blogs Have it as Next Page while few other text them as Older Entires while few like me use Page navigation plugins to give its s Page 1 2 3 4 >> type look.
Say If I wanted to navigate to the url domain/page/2 I get a 404 Error even when have around 15 posts in my blog.
I went through a lot of support forums and several methods were specified to overcome the isuues but a really simple tweak played the trick and I had no need to edit any wordpress files manually.
In Reading Settings Of the Settings section, Find the field that says Blog Pages Show at most and change the default value of 10 to 5… and this trick pays it off!!! The image bellow will help u better to lacate the field.
Change in Reading Settings to avoid 404 error during Page Navigation
This error can occur across any version of WordPress.