What Is a 500 Error?

A 500 Internal Server Error means the server hit an unexpected problem and could not complete your request. It is a generic, catch-all message: the server knows something broke but cannot say what. Unlike a 404, which means the page is missing, a 500 is a fault on the server itself, often a code bug, a bad setting, or exhausted memory. A persistent 500 can also cost you search rankings.

What causes a 500 error?

A 500 error means something on the server failed while handling the request, and the server had no more specific error to return. The visitor did nothing wrong. The problem is on your side.

MDN lists the common technical causes, including improper server configuration, out-of-memory issues, and unhandled exceptions (MDN, updated June 2026). In plain terms, that means a bad setting, a server that ran out of memory, or a bug in the code.

On everyday business sites, especially those built on a CMS, the trigger is often more mundane. A broken plugin or theme after an update, or a mistake in a configuration file, can take the whole site down. The error page looks alarming, but the cause is usually recent and fixable.

How is a 500 error different from a 404?

A 500 and a 404 point at opposite sides of the connection. A 404 says the page is missing. A 500 says the server broke while trying to respond.

	404 Not Found	500 Internal Server Error
Whose side	The request, a missing or wrong URL	The server
Error class	4xx, client error	5xx, server error
Typical cause	Deleted page, broken link, typo	Code bug, bad config, out of memory
Is one normal	Yes, harmless on its own	No, it means something is broken now

Source: HTTP status code classes, MDN, retrieved October 2026.

MDN groups status codes into classes, with the 400 range for client errors and the 500 range for server errors. That difference decides how you fix it. A 404 is often a content problem you can redirect, while a 500 needs a look at the server, the code, or the most recent change.

Do 500 errors hurt SEO?

An occasional, brief 500 does little harm, but a persistent one does real damage. Google treats server errors as a signal to back off, and eventually to drop the page.

Google's documentation says "5xx and 429 server errors prompt Google's crawlers to temporarily slow down with crawling" (Google crawling documentation, updated February 2026). If the errors persist, already-indexed URLs are eventually dropped from the index.

The contrast with a missing page is useful. A single 404 is normal, but a server that keeps returning 500s tells Google the site is unhealthy. It then spends less crawl budget on you, in proportion to how many URLs are failing, so fixing the error quickly is what protects your rankings.

How do you fix a 500 error?

You fix a 500 by finding what failed on the server, starting with whatever changed most recently. The error page rarely names the cause, so the server logs are the real starting point.

The first thing we check when a live site suddenly throws a 500 is what changed just before it, usually a plugin or theme update. Most emergencies we handle trace back to an update, not a mysterious hack.

A practical order to work through:

• Check the server error log for the specific failure.
• Undo or update the most recent change, whether a plugin, theme, or code edit.
• Look for a broken configuration file or wrong file permissions.
• Check whether the server ran out of memory or hit a resource limit.
• If you cannot find it fast, restore a recent backup to get back online, then investigate.

If the whole server is down rather than one page, the issue may sit with your host, which overlaps with a host outage rather than your own code.

Frequently asked questions

What does "500 Internal Server Error" mean?

It means the server met an unexpected condition and could not complete the request. In MDN's words, it is a generic "catch-all" response used when the server cannot find a more specific 5xx error to return. The fault is on the server side, not with the visitor or the link they clicked. The fix lives in your code, configuration, or hosting.

Is a 500 error my fault or the visitor's?

It is a server-side problem, not the visitor's. A 500 falls in the 5xx class, which MDN defines as server errors, unlike the 4xx client errors such as a 404. The person seeing it did nothing wrong. Something on your website or its server failed, so the fix sits on your side, usually in recent changes, code, or server resources.

Do 500 errors affect my Google ranking?

A brief, occasional 500 has little effect, but a persistent one does. Google slows its crawling when it meets server errors and, if they continue, drops the affected URLs from its index. A page that is briefly down recovers, but a site that keeps failing loses crawl attention and rankings. Fixing 500s quickly is the point.

How do I fix a 500 error on my WordPress site?

Start with the most recent change, since plugin and theme updates are the usual cause. Deactivate recently updated plugins, or switch to a default theme, to find the culprit. Check the server error log and the .htaccess file, and raise the PHP memory limit if the server ran out. If you are stuck, restore a recent backup to get the site live again.

What is the difference between a 500 and a 502 or 503 error?

All three are 5xx server errors, but they point at different problems. A 500 is a generic internal failure. A 502 Bad Gateway means one server got an invalid response from another it relies on. A 503 Service Unavailable means the server is temporarily overloaded or down for maintenance. The 500 is the catch-all when nothing more specific fits.

Getting your site back up, then keeping it up

Storming Solutions builds and maintains websites for Malaysian businesses, and clearing a 500 error fast, then stopping it from recurring, is part of the maintenance we do. We would rather trace the failing update and set up backups than leave a client staring at a broken server page.

Seeing "500 Internal Server Error" on your site right now? Send us the URL on WhatsApp for a quick look, learn what a 404 error is by contrast, or talk to us about web development.