Many times while testing and troubleshooting your code or website you can run in to internal server errors. internal server errors are simply a way for apache to tell you that something is wrong with the server or site configuration.

Internal server errors can originate in the “.htaccess” file. If your “.htaccess” file is not properly configured for whatever rules you are trying to use. Make sure that the .htaccess file is properly configured and it is free of extra spaces and everything is in the proper case. “.htaccess” files are used to apply small setting changes to apache that are site and directory specific for access to the site, you can set rewrite rules “redirects” , you can block IP addresses, or even setup login systems.

Another reason an internal server error can happen is if apache is configured incorrectly. If you install an ssl certificate improperly or have some other apache configurations set wrong this can  cause internal server errors. The best way to fix these is restore a backup of apache or overwrite the current configuration file with a fresh new copy of the configuration file.

A very common way to generate an internal server error is by having the permissions for a file set to something apache does not support, files permissions 000 will show a access denied, but if apache is configured to not allow that kind of file to be run it will display an internal server error. The best way to correct this is to contact your host, or check in the apache configuration to see what file permissions you can use, most common are 644 for files and 755 for files hosted on a server.

Server load comes into play with internal server errors. If the server has a high load it will let you know what is wrong by displaying an internal server error, these are harder to track down. When you encounter an internal server error its best to check the error logs for your server to see why you are getting this error. In most cases the server will show you very simply what is causing the problem and give you enough information to fix it.

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