Common WordPress Errors and How to Fix Them
If your WordPress site is showing an error, this article covers the most common ones and how to resolve them on Unisolva hosting.
Error 1: White Screen of Death (Blank White Page)
Symptoms
Your site or wp-admin shows a completely blank white page with no error message.
Cause
Usually a plugin conflict, theme error, or PHP memory limit issue.
Fix
- Enable debug mode to see the actual error: In cPanel > File Manager, open wp-config.php, find define('WP_DEBUG', false) and change false to true. Reload your site to see the error.
- Disable all plugins: In File Manager, rename the folder /wp-content/plugins/ to /wp-content/plugins-disabled/. If the white screen clears, a plugin was the cause. Rename the folder back and reactivate plugins one by one to find the culprit.
- Switch theme: In File Manager, rename your active theme folder inside /wp-content/themes/. WordPress falls back to a default theme. If the screen clears, your theme caused the issue.
- Increase PHP memory: Go to cPanel > MultiPHP INI Editor, select your domain, and increase memory_limit to 256M or 512M.
Error 2: 500 Internal Server Error
Symptoms
Your site shows "500 Internal Server Error" or "The site is experiencing technical difficulties."
Cause
A broken plugin, corrupted .htaccess file, or PHP error.
Fix
- Regenerate your .htaccess file: In cPanel > File Manager, rename .htaccess to .htaccess-old. Then in your WordPress dashboard go to Settings > Permalinks and click Save Changes — WordPress will create a fresh .htaccess.
- Disable plugins using the File Manager method above.
- Check error logs: In cPanel > Errors, look for the specific PHP error message causing the 500.
Error 3: Memory Limit Exceeded
Symptoms
"Allowed memory size of X bytes exhausted" appears on your site or in wp-admin.
Fix
- Go to cPanel > MultiPHP INI Editor
- Select your domain from the dropdown
- Find memory_limit and increase it to 256M or 512M
- Click Apply
Error 4: 404 Not Found on Pages (Permalinks Issue)
Symptoms
Your homepage works but clicking any other page or post returns "404 Not Found."
Cause
Permalink rules need to be refreshed — this often happens after a migration or WordPress update.
Fix
- Log in to your WordPress dashboard
- Go to Settings > Permalinks
- Click Save Changes without changing anything — this regenerates the rewrite rules
- Test your site
Error 5: Cannot Log In to WordPress
Symptoms
Correct username and password are rejected on the wp-admin login page.
Fix
- Clear your browser cache and cookies, then try again
- Try an incognito / private browsing window
- Click Lost your password? on the login page and reset via email
- If email is unavailable, see: How to Reset Your WordPress Admin Password
Still Having Issues?
Open a support ticket at my.unisolva.com with the following information:
- Your domain name
- The exact error message (copy-paste or screenshot)
- The time the error started
- Any recent changes you made before the error appeared
Related Articles
- How to Reset Your WordPress Admin Password
- How to Update WordPress, Plugins, and Themes Safely
- How to Verify Your Site After a Restore
- How to Speed Up Your WordPress Site with SpeedyCache Pro
