# Help Category: Common Errors

> Canonical: https://jethost.com/kb/category/common-errors/page/2/ · Results: 24 · Page 2 of 3

Fix the most common website and browser errors — SSL, connection, DNS, cache and WordPress errors — with clear, step-by-step guides for both visitors and site owners.

- [How to Fix the ERR_SSL_VERSION_OR_CIPHER_MISMATCH Error](https://jethost.com/kb/how-to-fix-err-ssl-version-or-cipher-mismatch/) — ERR_SSL_VERSION_OR_CIPHER_MISMATCH means your browser and the server could not agree on a shared way to secure the connection. They tried to find a common security protocol and encryption method, and failed. The cause is usually an outdated protocol on one side, an old browser, or a wrong clock. Here is how to fix it, first […]
- [How to Fix “Error Establishing a Database Connection” in WordPress](https://jethost.com/kb/error-establishing-a-database-connection-wordpress/) — “Error establishing a database connection” means WordPress loaded but could not reach its database, so it has no content to show. The page goes blank except for that line. The cause is almost always wrong database details, a database that is down or out of resources, or corrupted tables. This guide shows how to find […]
- [How to Fix “There Has Been a Critical Error on This Website”](https://jethost.com/kb/fix-critical-error-on-this-website-wordpress/) — Seeing “There has been a critical error on this website” on your WordPress site? It’s alarming, but it’s almost always fixable in a few minutes. The message is WordPress’s way of hiding a fatal PHP error from visitors – usually caused by a plugin, theme, or memory limit. This guide walks through the fixes in […]
- [How to Fix the “521: Web Server Is Down” Error](https://jethost.com/kb/fix-error-521-web-server-is-down/) — Seeing “Error 521: Web server is down”? This is a Cloudflare error – it means Cloudflare reached your domain but couldn’t connect to your origin server behind it. Your site isn’t necessarily gone; usually the connection between Cloudflare and your host is being refused. This guide shows the common causes and fixes. What Error 521 […]
- [How to Fix the NET::ERR_CERT_AUTHORITY_INVALID Error](https://jethost.com/kb/how-to-fix-err-cert-authority-invalid/) — NET::ERR_CERT_AUTHORITY_INVALID means the browser does not trust the site’s SSL certificate, because it was not signed by a recognised authority. You see a “Your connection is not private” warning. The cause is usually a self-signed or misconfigured certificate, a wrong device clock, or security software swapping the certificate. Here is how to fix it. What […]
- [How to Fix the ERR_NAME_NOT_RESOLVED Error](https://jethost.com/kb/how-to-fix-err-name-not-resolved/) — ERR_NAME_NOT_RESOLVED means your browser could not turn the web address into an IP number, so it never found the server to connect to. The cause is almost always DNS – a typo, your DNS settings, or the domain itself not resolving. Here is how to fix it as a visitor, and what to check if […]
- [How to Fix the ERR_CONNECTION_CLOSED Error](https://jethost.com/kb/how-to-fix-err-connection-closed/) — ERR_CONNECTION_CLOSED means the connection dropped before the server could reply – the line closed with nothing sent back. It looks a lot like a reset connection, and the causes are similar: an unstable network, a VPN or security tool, or the server closing the link. Here is how to work through it. What the error […]
- [How to Fix the ERR_CONNECTION_RESET Error](https://jethost.com/kb/how-to-fix-err-connection-reset/) — ERR_CONNECTION_RESET means the connection started and then dropped halfway, as if someone cut the line mid-sentence. It usually points to an unstable network, a VPN or firewall interfering, or the server closing the link. Most cases are on your side and quick to clear. What the error means The browser and server began talking, then […]
- [How to Fix the ERR_CONNECTION_TIMED_OUT Error](https://jethost.com/kb/how-to-fix-err-connection-timed-out/) — ERR_CONNECTION_TIMED_OUT (and the shorter ERR_TIMED_OUT) means your browser waited for the server and gave up with no reply. Nothing refused it – the answer just never came. The usual causes are a slow or overloaded server, a firewall quietly dropping the request, or your own network. Here is how to pin it down. What the […]
- [How to Fix the ERR_CONNECTION_REFUSED Error](https://jethost.com/kb/how-to-fix-err-connection-refused/) — ERR_CONNECTION_REFUSED means the site turned your browser away: it reached the server, but the server would not accept the connection. The cause is usually the site being down, a firewall in the way, or something on your own network. Here is how to find which, first as a visitor, then as the site owner. What […]

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