Fix Apache 500 Error

The Problem

Your site shows a generic '500 Internal Server Error' with no further detail, which could mean a PHP fatal error, a broken .htaccess file, or a permissions problem — and without checking the logs, there's no way to tell which.

About this problem

Apache's 500 error page is deliberately generic for security reasons (it doesn't want to leak internal details to visitors), which means the actual cause is almost always sitting in the server's error log rather than visible on the page itself — a misconfigured .htaccess directive, a PHP fatal error, or incorrect file permissions are the most common culprits.

It typically appears right after a code deployment, a server migration, or a change to .htaccess rules.

What's Included

• Checking Apache's error log for the specific underlying error, not just the generic message
• Testing .htaccess rules in isolation if a syntax error there is suspected
• Checking file and directory permissions against what Apache's process user needs
• Applying the fix and confirming the page loads correctly afterwards

What's NOT Included

• Fixing bugs in the application's own PHP code beyond identifying that it's the cause
• Data recovery if the underlying cause involved data loss
• Server migrations or broader infrastructure changes beyond this specific error

How It Works

1. Check Apache's error log for the specific line and message behind the generic 500 response.
2. If a .htaccess change is suspected, temporarily rename it to confirm whether that's the actual trigger, then isolate the specific problematic directive.
3. Check file and folder permissions against what the Apache process user requires to read and execute them.
4. If the log points to a PHP fatal error, trace it to the specific file and line referenced.
5. Apply the appropriate fix and reload the page to confirm the error is genuinely resolved, not just hidden.

In practice: you buy the service, send over whatever access or details the job needs, I investigate and do the work, and you confirm it's resolved before we call it done.

Frequently Asked Questions

Why does Apache just say '500 Internal Server Error' with no details?

That's intentional — showing the real error to visitors could leak sensitive information about your server, so the specific cause is only available in the server's own error log.

Can a bad .htaccess file cause a 500 error?

Yes, this is one of the most common causes — a single syntax mistake or an unsupported directive in .htaccess can bring down an entire site with a 500 error.

Where do I find Apache's error log?

Commonly at /var/log/apache2/error.log on Debian/Ubuntu or /var/log/httpd/error_log on CentOS/RHEL-based systems, though the exact path can be customised per virtual host.

Can file permissions cause a 500 error?

Yes, if Apache's process user doesn't have permission to read a required file or execute a script, it can manifest as a 500 error rather than a more specific permissions message.

Is a 500 error always caused by my code?

Not always — server configuration, permissions and .htaccess issues are just as common a cause as an actual bug in the application code itself.

Will restarting Apache fix a 500 error?

Rarely, since a 500 error is almost always caused by a specific configuration, code, or permissions issue rather than the service itself being in a bad state.