One common issue many WordPress users face is the “Page Not Found” (404) error, even when the page clearly exists.
The Problem
Pages and posts return a 404 error after:
Installing a new theme
Activating or deactivating a plugin
Migrating the website to a new server
The WordPress admin area works fine, but frontend pages do not load.
Why This Happens
WordPress uses permalinks to generate page URLs. Sometimes, after changes to the site, the permalink structure does not refresh properly.
This causes WordPress to look for pages using outdated rules.
The Fix
Log in to your WordPress admin dashboard
Go to Settings → Permalinks
Without changing anything, click Save Changes
That’s it.
WordPress automatically regenerates the rewrite rules, and the pages start working again.
Lesson
When WordPress behaves strangely after a change, always check the basics first.
Many issues are not bugs — they are configuration details that need refreshing.
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