The 5 Most Common WordPress Errors Explained

Running into problems while building or editing your website can feel overwhelming, especially if you are just starting out. Even though WordPress is the world’s most popular Content Management System (CMS), users still face some common issues.

Since WordPress was launched in 2003 and now powers approximately 42.4% of all websites on the internet (as of 2026), five common issues have been identified and explained in detail. Understanding these errors can help you troubleshoot and solve them.

Seeing a blank screen, a database error, or a confusing server message can make it feel like your website is beyond repair. In fact, most WordPress problems are common, well-documented, and can be fixed by following clear troubleshooting steps. WordPress points out that if you see an error or a white screen, someone else has likely faced and solved the same problem.

The White Screen of Death is a frustrating WordPress error because it usually shows no helpful message. Instead of your website, you just see a blank white page. WordPress explains that both PHP and database errors can cause this, which makes the problem feel vague and confusing.

For beginners, this can be the moment when panic sets in. There are no clear clues, no warnings, and sometimes you cannot even access the dashboard. However, the cause is often something simple, such as a plugin conflict, a theme issue, or a PHP issue.

One of the most common causes of the White Screen of Death is a plugin compatibility issue. A third-party WordPress plugin may conflict with WordPress core, or an active theme such as Avada. Another common cause is the currently active theme, especially after switching themes or setting up a new site. WordPress also directs users to debugging tools, as PHP errors may be at play behind the scenes.

This usually means that some code on your site is failing before WordPress can load the page. Instead of showing an error message, the site just displays nothing.

The first thing to do is stay methodical. If the WordPress dashboard is still accessible, deactivate all plugins and then reactivate them one by one. This is the simplest way to identify whether a single plugin is causing the problem.

If you cannot access the admin area, connect to the site using FTP or your hosting file manager. Go to the /wp-content/plugins/ folder and rename the plugins directory to something like /plugins_old/. This will deactivate all plugins at once. If the site comes back, you have confirmed that one of the plugins is responsible.

If plugins are not the problem, look at the theme. WordPress advises switching to a default theme, such as Twenty Twenty-One, in the WordPress Dashboard, or renaming the active theme folder via FTP if the Dashboard is unavailable. If the site starts working again, the theme was likely the source of the error.

It is also worth enabling debugging on a staging site or backup copy. WordPress provides a standard debugging setup using WP_DEBUG​​, WP_DEBUG_LOG​, and WP_DEBUG_DISPLAY, which can log errors to /wp-content/debug.log. Note that debugging tools and measures are intended for local or staging environments, not live production sites.

The Internal Server Error, often called a 500 error, is another common WordPress problem that seems more mysterious than it is. It usually displays a simple message stating that the server encountered an internal error and could not complete the request. Unlike a missing page or a broken design, this error often indicates a problem with the site’s setup.

This error can affect the whole site or only specific areas, such as the Admin Dashboard. Because it is a server-level message, beginners often assume the host is fully to blame. Sometimes that is true, but often the real cause sits inside the WordPress installation itself.

WordPress lists a corrupted .htaccess file as one of the most likely causes. That matters because .htaccess controls important rewrite and permalink behavior on many WordPress setups. If it becomes invalid, the server may stop serving pages correctly.

Other possible causes include plugin conflicts, theme issues, insufficient PHP memory, or server configuration issues. Sometimes, a recent change to the site adds code that the server cannot handle. The error message does not always say what is wrong, so you often need to rule out each cause one by one.

WordPress recommends testing whether the .htaccess file is corrupted first. Using FTP or your host’s file manager, go to the site root and rename the .htaccess file to .htaccess_old. Then reload the website. If the site starts working again, navigate to the  Settings > Permalinks page in the Dashboard and resave your permalink settings so WordPress can generate a fresh .htaccess file.

If that does not solve it, move on to plugin troubleshooting. Deactivate plugins one at a time, or disable all of them at once via FTP by renaming the plugins folder. This helps rule out a broken extension as the trigger. WordPress’s general troubleshooting guidance for common errors repeatedly points to plugins as a frequent cause of serious site failures.

If the issue appeared right after a theme update or theme switch, test with a default WordPress theme. If the error persists, consult your hosting control panel or your host's support. WordPress’s security and administration guidance also notes that hosting environments play a major role in site reliability, backups, and recovery options, so the host can sometimes identify server-side logs or limits that are not visible from WordPress alone.

This is one of the more recognizable WordPress errors because the message is often shown exactly as written: “Error establishing a database connection.” When this happens, WordPress cannot talk to the database that stores your posts, pages, settings, users, and site configuration. Without that connection, the site has no data to load, so the front end and often the admin area stop working.

For beginners, this error can seem technical and intimidating, but the main issue is simple: WordPress is trying to connect to the database and cannot.

There are three main possibilities for this error: incorrect wp-config.php settings, problems with the web host, or a compromised website. Incorrect values for the database name, username, password, database host, or table prefix in wp-config.php can all cause a connection failure. In other cases, the host may be having database server issues. A compromised site can be a cause, which is why security should not be overlooked.

Additionally, this error sometimes occurs after moving your site or changing hosts because the database details may not match the new setup.

Start with the wp-config.php file. Carefully check that the database name, username, password, and host are correct. This is one of the most common fixes because even a small typo can prevent the connection from forming.

If the credentials look correct, contact your host to ask whether the database server is down, overloaded, or otherwise unavailable. Hosting issues can cause this error, and the host is responsible for part of the environment, while the site owner remains responsible for the application itself.

If there is any reason to suspect compromise, treat the issue seriously. WordPress’s security hardening guide emphasizes keeping WordPress core, plugins, themes, and server software up to date, avoiding untrusted themes and plugins, and maintaining backups and recovery plans. Those habits do not just help prevent hacks; they also make recovery much faster if something does go wrong.

To fix this, check your database details, ask your host to confirm the database is working, restore from a clean backup if needed, and scan your site if you suspect a security issue.

Sometimes, if a theme or WordPress update is not performed correctly or is incomplete, WordPress gets stuck in maintenance mode. Instead of loading as usual, the site may display a maintenance message for much longer than expected or remain inaccessible even after the update is complete.

This usually happens during a core, theme, or plugin update and often appears suddenly, especially if you run several updates simultaneously.

In simple terms, WordPress temporarily places a site into maintenance mode while updates run. If the upgrade is interrupted, times out, or does not finish cleanly, the site can remain stuck in that state. That might happen due to a server timeout, a failed update, resource constraints, or a conflict that interrupts the update process.

In addition, failed auto-upgrades and connection timeouts are common errors that are similar in nature. These issues are usually not serious damage, but rather unfinished updates that need to be cleaned up.

The most common fix is to remove the temporary maintenance indicator file from the site root using FTP or your hosting file manager. If the update stalled, deleting that file usually allows the site to load again. After that, you can retry the failed update more carefully, ideally one update at a time.

It is also a good idea to check if the problem happened during a plugin, theme, or core update, and to review your site for any parts that did not update fully. If the issue persists, check for broader causes, such as low server resources or update conflicts.

For users, the best approach is to restore access first, then rerun updates one at a time, and always make sure you have a recent backup before updating. You can also use a staging site to test the update process before running updates on a live site.

A 404 error means a page cannot be found, but in WordPress, there is a special version of this problem: the page exists, but the permalinks stop working. “Pretty Permalinks 404 and Images not Working” and “Custom Post Type 404 Errors” are fairly common issues.

This often happens after changing permalink settings, moving your site, installing a new plugin, adding custom post types, or editing server rules. It is confusing because the content is still in the dashboard, but the front-end URLs show 404 errors.

The most likely cause is a rewrite rules problem, often related to the server's .htaccess file on Apache-based hosting. If WordPress cannot properly write or refresh its permalink rules, friendly URLs may stop routing correctly. In some cases, a theme or plugin that registers custom post types may also require permalink rules to be refreshed after activation.

For users, it is important to know that your content is probably still there. The site usually isn't missing the page; it just doesn't know how to route the URL correctly.

The first fix is simple. Go to Settings > Permalinks page in the WordPress Dashboard and click "Save", even if you do not change anything. This makes WordPress refresh its rewrite rules. This step also helps fix internal server errors and creates a clean .htaccess file.

If that does not solve the issue, check the .htaccess file itself. A corrupted, missing, or incorrect version can cause pretty permalinks to fail. Renaming the file and allowing WordPress to regenerate it can often fix the issue on Apache-based setups.

If the problem affects only a custom post type, check the plugin or theme that added it, then refresh permalinks again. If you recently moved or restored your site, make sure the server is set up correctly for rewrite rules. These errors often appear as missing content, but they are usually just URL routing issues.

WordPress errors can seem dramatic, but most of the time they point to a specific problem rather than a broken site. The White Screen of Death, Internal Server Error, database connection issues, maintenance mode problems, and permalink 404s are all common.

The safest approach is always the same: stay calm, make a backup, test changes step by step, and find the most likely cause one at a time. WordPress also suggests using staging or backups before making changes, and keeping WordPress, plugins, and themes updated is one of the best ways to prevent problems.