WordPress 500 Error After Update Fix
What You Are Experiencing
Do any of these sound familiar?
Seeing a WordPress 500 error after an update is incredibly frustrating and often means your site is completely down. This critical internal server error can appear immediately after a significant change, leaving you with an inaccessible website or admin area. We understand the urgency; your business is impacted.
You might be experiencing this if:
If any of these match, you are in the right place.
Root Cause
Why this happens
A WordPress 500 error after update typically indicates a server-side issue preventing the server from fulfilling a request. This often stems from a conflict or resource exhaustion triggered by the recent change. Common culprits include faulty plugin or theme code that isn't compatible with the new WordPress core version or other active components.
Another frequent cause is an incorrect PHP version or insufficient PHP memory. If you updated WordPress or a plugin, and your server's PHP version is too old or too new, or the memory limit is too low, it can lead to a crash. This is especially true if you see a wordpress 500 error after php version change.
Corrupted .htaccess files, often modified incorrectly by plugins or during migrations, can also cause this error. Furthermore, issues during a cPanel migration or a domain change can leave behind incorrect file permissions or database connection strings, leading to a 500 error. For a more general understanding of this issue, see our guide on WordPress 500 Internal Server Error — General Fix.
Try This First
Steps you can take right now
Work through these in order. Each step is safe unless noted otherwise.
Enable WordPress Debugging
This can reveal specific error messages instead of a generic 500. Connect via FTP/SFTP and edit your wp-config.php file. Add the following lines just above /* That's all, stop editing! Happy publishing. */. Remember to set WP_DEBUG back to false once you've diagnosed the issue, as displaying errors publicly is a security risk.
define( 'WP_DEBUG', true ); define( 'WP_DEBUG_LOG', true ); define( 'WP_DEBUG_DISPLAY', false ); // Check wp-content/debug.log for errors
Deactivate Plugins or Theme
A common cause of a wordpress 500 error after plugin install or update is a faulty plugin. Access your site via FTP/SFTP, navigate to wp-content/plugins/ and rename the plugin folder that caused the issue, or rename the entire plugins folder to plugins_old to deactivate all. Do the same for wp-content/themes/ if the error occurred after a theme switch. This will temporarily break your site's styling but can bring it back online.
wp-content/plugins/ wp-content/themes/
Check .htaccess File
A corrupted or misconfigured .htaccess file can trigger a 500 error. Connect via FTP/SFTP, locate .htaccess in your root WordPress directory, and rename it to .htaccess_old. Then, try accessing your site. If it works, go to WordPress Admin > Settings > Permalinks and save changes to generate a new, clean .htaccess file.
.htaccess
Adjust PHP Version
If your wordpress 500 error after php version change, revert to the previous PHP version via your hosting control panel. If it wasn't a change, try switching to a slightly older stable version (e.g., 7.4 if you're on 8.0) or a newer one (e.g., 8.1 if you're on 7.4) to test compatibility. This is a critical step for many post-update 500 errors. Be aware that changing PHP versions can sometimes cause new issues if your site's code isn't fully compatible.
N/A
Professional Help
If none of these steps resolved it, this is where professional help saves time. Attempting further fixes without deep technical knowledge can risk data loss or introduce new problems.
Still not resolved?
Our engineers diagnose and fix this while you focus on running your business. No guesswork. No wasted hours.
Get it fixed todayOur Process
How WebFixHQ fixes this for you
When you face a WordPress 500 error after update, our priority is immediate diagnosis and resolution. We begin by securely accessing your site files and server logs to pinpoint the exact cause, whether it's a plugin conflict, theme incompatibility, PHP version mismatch, or a corrupted .htaccess file. This rapid assessment is crucial for a quick fix.
Our experienced technicians will then safely implement the necessary repairs. This includes carefully deactivating problematic plugins or themes, correcting .htaccess configurations, adjusting PHP settings, or repairing database issues that might have arisen during a domain change or migration. We ensure all fixes are tested thoroughly before your site is fully restored.
We work quickly, often resolving these critical errors within hours, to minimize your downtime. Our goal is to get your site back online safely and prevent recurrence. Get expert help for your WordPress 500 error with our WordPress Errors & Crashes service.
Why WebFixHQ
Trusted by site owners worldwide
100+
Countries Worldwide
2 min
Average Response Time
98%
Client Satisfaction Rate
- Rapid Response: We understand downtime costs you money. Our team responds within hours, often resolving critical issues the same day.
- Expert WordPress Technicians: Our specialists focus exclusively on WordPress, ensuring deep expertise in diagnosing and fixing complex errors like the 500 after an update.
- Transparent Pricing: You receive a clear, upfront quote before any work begins. No hidden fees, no surprises.
- No Fix, No Fee Guarantee: If we can't resolve your WordPress 500 error, you don't pay. It's that simple.
- Comprehensive Solutions: Beyond the immediate fix, we identify underlying causes to prevent future issues. Start with a free website audit or Chat with us now.
100% Fix Guarantee
If we cannot resolve the issue, you pay nothing. No questions asked.
FAQ