So let’s say after using your WordPress blog for a while you’ve decided to change your permalink structure to something more readable than the default ?p=123. There are loads of articles on the Internet suggesting to install Permalinks Migration plug-in. However, I’ve seen plenty of people complaining about this plug-in not working correctly and generating HTTP 404 Error Message. It didn’t work for me either for the first time I installed it, but there’s a trick to it I had to figure out on my own. Here’s step-by-step instructions: