What is 500 Internal Server Error and How to Fix It? [Updated Guide]

Ever clicked a link or typed in a website only to find a 500 Internal Server Error page? The 500 error is certainly among the prevalent server-side problems. It may seem like a mystery, but it is actually not that hard to understand. In this guide, you will learn what this error is, what causes it, and, much more importantly, how to fix it. Website owner or casual internet user, the blog is for you

What is the 500 Internal Server Error?

This is a very generic server error message, which is called a 500 Internal Server Error. It means that some problem has happened with the server that is hosting the website, but the server does not know what the problem is. The 500 Internal Server Error is an umbrella error for otherwise unspecified errors, unlike 404s (Page Not Found) or 403 (Forbidden).

This error means that the problem is really with the server and not with your device or browser. Figuring out the cause of this may be a bit tricky, though.

Some Reasons of the 500 Internal Server Error

First step of troubleshooting is to know the reason for an error. Here are some common reasons for that:

 1. Corrupted .htaccess File

A corrupted .htaccess file ranks among the causes of 500 error messages. This is the file that requests specify to determine how a server behaves when responding to that resource. A damaged file can prevent many errors, including the 500 error. The file may get corrupted while updating a plugin or in case of incorrect configuration.

 2. Faulty or Incompatible Plugins

People who rely on content management systems (CMS) such as WordPress, Joomla, and Drupal sometimes encounter 500 errors when they install a plugin or theme that runs counter to the CMS's latest version. Occasionally, this problem may be caused by plugins that have not been updated for a long time or by competing code.

 3. Inappropriately File Permissions

Each file and directory can be accessible to any administrator on your server. There are permissions for each of these files that specify who can or cannot access or modify them. Incorrectly set permissions on server files can lead to errors such as the 500 error, where having a PHP script fail or not have appropriate permissions prevents your website from actually running properly.

 4. Server Overload

The server is most likely going to show a 500 error when it is overloaded due to a large amount of traffic, usually high-traffic events, and when server resources are limited. The shared hosting environments are the most vulnerable to this situation.

 5. Timeouts in PHP

PHP is yet another programming language that fostered the development of many websites and web applications. However, if a particular script runs too long. For example, a script that connects to an external resource that does not respond in time the server generates a 500 error.

 6. Coding Errors

Like coding errors present in your own files on the server side, like PHP, it can lead to an internal server error when attempting to load that page. A bug in your code can cause very hard-to-find errors that cause the server to stop responding.

How to Fix the 500 Internal Server Error?

Don't panic if you are seeing this error on your website. Here is how to troubleshoot it and sort it out:

Step 1: 

Sometimes the error turns out to be temporary, and refreshing the page resolves the issue. Click refresh or press F5 on the keyboard. This isn't a fix for the root cause, but it's the easiest first step to take.

Step 2: 

500 errors can also come up from an outdated or corrupted cache in a browser. To exclude this as a cause, clear your cache and cookies. Here is how to do it:

• In Chrome: Settings > Privacy and Security > Clear Browsing Data.
• In Firefox: Options > Privacy & Security > Clear Data.

After that, attempt to load the page again. This will often remedy the fix.

Step 3:

If the cache emptying was not of help, then it is high time you should also check the .htaccess file. This file usually handles the server configurations, like redirections, security settings, and URL rewrites. Even a simple error or a conflict in this file can bring your entire site down.

To fix this:

1. Log in to your website's file manager through either FTP or cPanel.

2. Search for the .htaccess file (it mostly goes under the root directory).

3. Rename that file as .htaccess_old (this will disable the file).

4. Now try reloading your website. If you do not see the error, the problem was with your .htaccess file.

5. Now, you can create a new .htaccess file or restore it from a backup.

Step 4:

If you're using WordPress or another CMS, the culprit could be a plugin or theme; to pinpoint it: 

1. Deactivate them all by renaming the plugins folder in your site's wp-content directory. 

2. Reload your site. If the error is gone, a plugin is to blame. 

3. Turn each of your plugins back on one at a time to find the cause. 

If a theme is causing the issue, switch to the default theme to help isolate the problem. 

Step 5:

Most of the time, the cause of a 500 error is an invalid file permission. File permissions on most servers should be:

• Directories - 755
• Files - 644

You can use an FTP client such as FileZilla or your hosting control panel to change file permissions. If you are unsure of which files need their permissions updated, contact your hosting provider for assistance.

Step 6:

The error can sometimes occur due to a deficit of server resources. The fault can be repaired by increasing the PHP memory limit of your website, especially when you have a resource-hungry site.

To do this:

Find the wp-config.php file located at the root directory of your website.

Add this line of code:

define('WP_MEMORY_LIMIT', '256M');

This will increase the available memory for the site, and it can help you fix various memory problems that can cause 500 errors.

Step 7:

When none of the aforementioned steps solve the issue, reach out to your hosting provider. They can check the server logs and find out about server-side problems leading to an error.

Step 8: 

However, if your website is still broken and not functioning, some experts might be able to help. You can visit the best website development company in Dubai. People who are professionals in web design will know how to fix these issues quickly and effectively so that your site remains up and running, user-friendly, and alive.

How to Prevent the 500 Internal Server Error from Happening Again

Here are some active measures that would help secure error-free operation of the website with regards to 500 Internal Server Error. Once fixed, the work does not end there.

1. Keep Software Updated

Make timely updates to the website's content management system, plugins, and themes. Outdated software is considered one of the most common causes of errors such as the 500 Internal Server Error. In fact, these updates promise bug fixes and other security improvements to avoid causing incompatibilities and conflicts

2. Regular Backups

Always backup your website, even in cases of devastation. If anything were to happen, reversion to an earlier state would be much easier. Recovery is made easier using backup plugins/tools provided by your web host, as they can schedule backups.

3. Optimize Server Performance

Track the server usage for your site. For example, an explosion in growth or heavy traffic may compel one to upgrade to a better hosting plan to meet demand. Internal errors occur due to server overload.

4. Check File Permissions

Poor file permission configuration often results in server error messages. Schedule a regular audit of your file permissions to confirm correct configuration. You can set or adjust them through your server control panel or through an FTP client.

5. Use a Staging Environment

Run any new updates, plugins, or themes through staging before they are live. That way, if there are any issues, you will be able to identify them before they affect your live site.

Following the above measures significantly cuts down the possibility of running into a 500 Internal Server Error in the future, also leaving your website running smoothly and efficiently.

Conclusion

There are those who've experienced this error, and indeed, an inconvenience such as it is. But, most often, they could easily fix the annoying situation with a little bit of troubleshooting and/or guidance. By applying further guidance, any site visitor will likely find the culprit and fix the problem in no time. Whether it's cleaning up the web browser cache, repairing a corrupted .htaccess file, or checking with file permissions, the site can once again be given the nod.

Should such individuals fail to find a solution by themselves, they may contact their web host provider or some professional web design team. Keeping the website peaceful and running will boost the user experience. Thus recommending timely action to restore business from downtime and customer frustration.

While these mistakes may happen, when handled adequately, they won't definitely stop you.