How to Fix WordPress Memory Exhausted Error: 3 Proven Solutions

Struggling with “Fatal error: Allowed memory size of X bytes exhausted” in WordPress? This guide walks you through 3 actionable methods to resolve the issue—no coding expertise required.

 What Causes the Memory Exhausted Error?
The error occurs when WordPress exceeds its allocated PHP memory limit. Common triggers include:
– Large plugin installations/updates
– Media-heavy sites (high-resolution images/videos)
– Complex themes or custom code
– Shared hosting with low default limits

 Method 1: Increase Memory Limit in `wp-config.php`
This method sets a site-specific memory limit. Ideal for quick fixes without server access.

 Steps:

1. Log into your cPanel → Open File Manager.
2. Navigate to your WordPress root folder (usually `public_html/`).
3. Locate and edit `wp-config.php` (right-click → “Edit”).

4. Add this line before `/* That’s all, stop editing! Happy publishing. */`:

define(‘WP_MEMORY_LIMIT’, ‘256M’);

5. Save changes. Refresh your site to test.

Method 2: Update PHP Memory Limit in cPanel
Adjusts the server-wide PHP memory limit for your account. Works if Method 1 fails.

Steps:

1. In cPanel, go to Software → Select PHP Version.

2. Click the Options tab.

3. Under “Memory Limit,” set a higher value (e.g., `512M`).

4. Click **Save**. Test your site.

 Method 3: Use MultiPHP INI Manager (Advanced)
Fine-tunes memory limits for specific domains (ideal for multi-site setups).

Steps :

1. In cPanel, navigate to Software → MultiPHP INI Manager.
2. Select your domain from the dropdown.
3. Scroll to “memory_limit” and update the value (e.g., `512M`).

4. Click Apply. Check your site for resolution.

—

Additional Tips

– Test After Each Step: Reload your site to confirm the error is gone.
– Contact Hosting Support: If limits remain unchanged, your host may need to adjust server configs.
– Optimize Plugins/Themes: Remove unused plugins/themes to reduce memory usage.

By following these steps, you’ll resolve the memory exhausted error and restore full functionality to your WordPress site.