WordPress updates are usually safe — but every plugin, theme, and the WordPress core itself is built by different developers who do not always test against each other. When an update changes something that another part of your site depends on, that dependency breaks, and you get a white screen, an error message, or a site that loads but looks wrong.
This is not a sign that your hosting is broken. It is almost always a compatibility issue between two or more pieces of software on your site, triggered the moment one of them changed.
Quick Fix Checklist
| Symptom | Most likely cause | First thing to try |
|---|---|---|
| White screen (WordPress “white screen of death”) | A plugin or theme PHP error | Rename the plugins folder via File Manager to disable all plugins |
| “There has been a critical error on this website” | Plugin/theme incompatible with the update | Use the recovery email link WordPress sends to the admin address |
| Layout broken, styles missing | Cached CSS or a theme conflict | Clear caches, then switch to a default theme to test |
| Stuck in maintenance mode | Interrupted update left a .maintenance file | Delete .maintenance from the site’s root folder |
| Can’t log in to wp-admin | Security or login plugin conflict | Disable that plugin by renaming its folder |
Why This Happens
Think of your WordPress site as a stack: WordPress core at the bottom, your theme on top of that, and plugins on top. Each was built independently, often years apart, by different teams. Sometimes an update:
- Removes or renames a function that another plugin or your theme was relying on
- Changes how data is structured, and an older plugin does not know how to read the new structure
- Requires a newer PHP version than your server is currently running
- Introduces a conflict with another plugin doing something similar
The result shows up in one of a few common ways: a White Screen of Death (blank white page), a visible error message mentioning a specific file or plugin, the site loading but looking broken, or the admin dashboard being broken while the public site is fine.
What to Check First (Safe Steps)
1. Do not panic, and do not keep clicking around
Repeatedly reloading or clicking deeper into a broken site rarely helps and can occasionally make troubleshooting harder.
2. Check if you can still access wp-admin
Go to yoursite.com/wp-admin. If you can log in here even though the public site is broken, most fixes can be done directly from the dashboard.
3. If you can access wp-admin: identify what was just updated
Go to Dashboard → Updates or Plugins → Installed Plugins and check the "last updated" information. Knowing what changed right before the site broke narrows down the cause immediately.
4. Temporarily deactivate the most recently updated plugin
From Plugins → Installed Plugins, deactivate the plugin that was updated most recently (not delete). Reload your site. If it is fixed, you have found the culprit.
5. If deactivating one plugin does not help, try deactivating all plugins
Select all plugins, choose Deactivate from the bulk actions dropdown, and reload the site. If the site comes back, reactivate plugins one at a time until you find the one causing the conflict.
6. If the issue followed a theme update, temporarily switch to a default theme
Under Appearance → Themes, activate one of the default WordPress themes (Twenty Twenty-Four, etc.) temporarily. If the site recovers, the issue is theme-related.
If You Cannot Access wp-admin at All
If the white screen affects both your site and the admin dashboard, you will need file-level access:
- Log in to your cPanel File Manager (or connect via FTP or SFTP).
- Navigate to
wp-content/plugins/. - Rename the folder of the plugin you suspect (e.g. rename
plugin-nametoplugin-name-disabled). WordPress will treat it as deactivated. - Reload your site.
If you are not sure which plugin to suspect, rename the entire plugins folder to plugins-disabled, then create a new empty plugins folder. This deactivates everything at once, and you can work through reactivating plugins individually.
When to Stop and Contact Support
Reach out to EDZNET support rather than continuing to troubleshoot yourself if:
- You do not have an existing backup and you are unsure about making file changes
- The error message mentions your database, not a specific plugin or theme
- You have deactivated all plugins and switched to a default theme, and the site is still broken
- The issue appeared without anyone triggering an update
When you contact support, include: what you were doing right before the site broke, the exact error message shown, and whether you can still access wp-admin.
Preventing This Next Time
- Keep a recent backup before updating
- Update plugins one at a time rather than all at once
- Use a staging site for testing updates before applying them to your live site
- Avoid running multiple plugins that do the same job (e.g. two caching plugins)
Frequently Asked Questions
Is this WordPress's fault, or my hosting's fault?
Neither, usually. It is almost always a compatibility gap between independently developed plugins or themes that only shows up once one of them changes.
Will turning on WordPress debug mode help?
Yes. Adding define('WP_DEBUG', true); to your wp-config.php file will show the actual PHP error instead of a blank white screen. Turn it off once resolved.
How do I stop this from happening on every update?
A staging environment is the most reliable answer — testing updates on a copy of your site before applying them live catches conflicts before they affect visitors.
Want Someone to Just Fix It?
If your site is down and you’d rather not experiment, our WordPress rescue service diagnoses the conflict, restores the site and leaves it updated and stable. If you think the site has been hacked rather than broken by an update, use our emergency report — those jobs jump the queue.
To make updates safer in future, our free EDZNET WordPress plugins cover security hardening and caching without the bloat that often causes these conflicts.
