How to Fix WordPress Plugin Conflicts

WordPress plugin conflicts can cause anything from a broken feature to a complete white screen. They often happen after installing, updating, or configuring a plugin that conflicts with another plugin, the active theme, or the current WordPress/PHP environment.

This guide shows you how to identify the problem based on the symptom and fix common plugin conflicts step by step.

 

WordPress Site Showing a White Screen

A completely blank page or WordPress “critical error” can be caused by a plugin conflict, theme problem, PHP error, or other fatal error. WordPress recommends deactivating plugins individually to identify whether a plugin is responsible.

Step 1: Try to Access WordPress Admin

yourdomain.com/wp-admin

If they can log in, continue from the dashboard.

Step 2: Deactivate All Plugins

Go to:

Plugins → Installed Plugins

Deactivate the plugins.

Step 3: Check Your Website

Open the website again.

If it works, a plugin is probably responsible.

Step 4: Reactivate Plugins One at a Time

Activate one plugin.

Check the website.

Then activate the next one.

When the problem comes back, you’ve found the likely conflicting plugin.

Step 5: Update or Replace the Plugin

Check whether there is a newer version or a known compatibility issue.

 

WordPress Shows a 500 Internal Server Error

Step 1: Think About What Changed

Ask:

• Did you update a plugin?
• Did you install a plugin?
• Did you update WordPress?
• Did you change PHP?
• Did you change the theme?

Step 2: Deactivate Plugins

Deactivate all plugins and test the site.

Step 3: Reactivate Plugins One at a Time

Find which plugin brings the error back.

Step 4: Check the Error Logs

Check your hosting/server error logs for the actual PHP error.

Step 5: Check .htaccess

If plugins aren’t responsible, check .htaccess. WordPress lists a corrupted .htaccess file as another possible cause of a 500 error.

 

A WordPress Feature Stopped Working After a Plugin Update

This targets people searching something like:

“WordPress feature stopped working after plugin update”

Step 1: Confirm the Update

Ask yourself:

Was the feature working before the plugin update?

Step 2: Deactivate the Updated Plugin

Temporarily deactivate it.

Step 3: Test the Broken Feature

If the feature works again, the updated plugin is likely involved.

Step 4: Update Related Plugins

Make sure WordPress, your theme, and related plugins are current.

Step 5: Check for a Plugin Conflict

Reactivate the plugin and test other plugins individually.

Step 6: Roll Back if Necessary

If the update is definitely causing the problem, restore the previous version from a backup/staging environment while you investigate a permanent fix.

 

Two WordPress Plugins Are Conflicting

Step 1: Identify the Two Suspected Plugins

Think about which plugins affect the broken feature.

For example:

Step 2: Deactivate Plugin A

Test the feature.

Step 3: Reactivate Plugin A

Then deactivate Plugin B.

Step 4: Compare the Results

If disabling one plugin fixes the problem, you’ve identified the likely conflict.

Step 5: Look for an Alternative

Update the plugins, check developer documentation, or replace one plugin if they cannot work together.

WordPress recommends the same basic isolation process: deactivate plugins and reactivate them individually to identify the source.

How to Disable WordPress Plugins Through FTP

Start with:

What if the website is broken and you cannot even open WordPress Admin? You can disable plugins through FTP or your hosting File Manager.

Step 1: Open Your Website Files

Use FTP, SFTP, or your hosting File Manager.

Step 2: Open This Folder

/wp-content/plugins/

Step 3: Rename the Plugins Folder

Change:

plugins

to:

plugins-old

WordPress will no longer load the plugins from the original folder. This is an officially documented troubleshooting method.

Step 4: Check Your Website

Try the website and /wp-admin again.

Step 5: Rename the Folder Back

Change:

plugins-old

back to:

plugins

Then reactivate plugins one at a time.

How to Disable WordPress Plugins Using WP-CLI

Write:

If you have SSH and WP-CLI access, you can troubleshoot plugin conflicts directly from the command line.

Disable one plugin

wp plugin deactivate plugin-slug

Disable all plugins

wp plugin deactivate –all

 

Test the website after disabling the plugins. If the problem disappears, reactivate the plugins individually to identify the conflict.

WP-CLI also provides methods for identifying plugin/theme conflicts by skipping plugins or themes during execution.

Best Practices to Minimize Plugin Compatibility Issues:

While 100% compatibility is impossible, following these best practices can help reduce potential conflicts and ensure a smoother experience:

1. Choose Well-Maintained Plugins

Opt for plugins with:

• High ratings and positive reviews.
• Regular updates.
• Active installations and ongoing developer support.

2. Limit the Number of Plugins

Install only the plugins necessary for your website’s functionality. Overloading WordPress with plugins increases the risk of conflicts and slows down performance.

3. Test New Plugins on a Staging Site

Before activating new plugins on a live website, test them in a staging environment. This allows you to identify and resolve issues without affecting your live site.

4. Check Compatibility Before Installation

Read plugin documentation and user reviews to verify compatibility with your current WordPress version, theme, and other plugins.

5. Backup Regularly

Always create a full backup of your website before installing or updating plugins. This ensures you can quickly restore your site if something goes wrong.

 

Having trouble with a WordPress plugin conflict? Our WordPress maintenance and development team can troubleshoot plugin conflicts, fix broken functionality, and keep your WordPress website running reliably.

WordPress Maintenance & Development Services

Conclusion

WordPress is a powerful platform, but its open-source nature and diverse plugin ecosystem make 100% compatibility with all plugins unrealistic. However, by carefully selecting, testing, and maintaining plugins, you can significantly reduce the likelihood of conflicts and ensure a smooth experience.

At Hike Branding, we specialize in WordPress development and customization, offering tailored solutions to help you build robust, high-performing websites. Whether you need assistance with plugin selection, troubleshooting, or custom development, our team is here to provide expert guidance and support. Contact us today to take your WordPress website to the next level!