500s come from code bugs, unhandled exceptions, database failures, exhausted memory or bad server configuration. Because it's generic, the real cause lives in your server logs, not the status itself.
For SEO, 500 errors are more serious than 404s. If Googlebot repeatedly meets 500s, it can't access content, may temporarily drop affected pages, and can slow crawling of the whole site. Widespread 500s during a traffic spike or deploy can dent visibility fast.
Treat them as urgent: check logs, fix the underlying error, and confirm recovery in Search Console. If you know downtime is coming, a planned 503 is the correct temporary signal — not a 500.
FAQ
Frequently asked questions
Yes, more so than 404s. Repeated 500s stop Googlebot from accessing your pages, can cause temporary de-indexing and slow crawling site-wide. They should be treated as urgent and diagnosed through server logs.