All my links on WordPress blog broken and lead to 404 page
If you ever had a problem like this, that you have many posts and pages on your WordPress blog but by clicking any of titles you can't display actual post and all links lead to 404 page, it could happen for few reasons. Bot most common reason is to fix your permalinks structure.
This usually happening after installing or even more after uninstalling some of WordPress plugin(s), so to fix this problem with broken links, i suggest first thing you try is to update your permalink structure!
Go to Admin dashboard > Settings > Permalinks then simply click "Save changes" or change your permalinks structure then click "Save changes".
In most cases this action instantly fix your problem and activate all your links sitewide.