In this article, we will discuss how to fix WordPress HTTP error 500. Since it is one of the most common errors that trouble the beginners, we need to discuss it in detail. Before we get into the topic, you should know that there is a lot of troubleshooting needed to fix 500 internal server error. Basically it is seen when there is a problem either in the file system or the server. Saying this we can expect this problem due to the host server or due to unlikely changes in the WordPress files in the root directory.