Why Is My Website Down? Common Causes and What to Check

A website can stop working even when you haven't touched it.

That is one of the frustrating parts of running a site: sometimes there is no obvious warning before something goes wrong.

Here are the common things worth checking.

Hosting problems

Your hosting server may be unavailable or having an incident.

If the server itself cannot accept requests, visitors may see connection errors or timeouts.

Application errors

The server can be running while the application on it is broken.

This is common with dynamic websites and web applications. A recent deployment, dependency change, configuration change, or application error can cause a site to fail even though the underlying machine is still online.

DNS problems

DNS is what helps turn a domain name into the destination a browser should contact.

A DNS configuration error can therefore make a website appear unavailable even if the web server itself is healthy.

SSL certificate problems

HTTPS certificates have a validity period.

If a certificate expires or is not valid for the hostname being visited, the browser can show a security warning.

That is different from the server being completely offline.

Domain problems

A domain can have its own lifecycle and renewal requirements. Domain expiry is separate from SSL expiry.

VeePulse currently monitors SSL certificates, not domain registration expiry.

A local problem

Before changing anything on the server, test from another network.

This one step can save you from "fixing" a server that wasn't broken.

A deployment or configuration change

If the site stopped immediately after you changed code, environment variables, DNS, hosting settings, or another configuration item, start there.

Write down what changed and when. It is much easier to undo one recent change than to randomly modify five things.

What monitoring can and cannot do

Monitoring cannot magically repair a broken server.

What it can do is tell you that something changed without requiring you to visit the website yourself.

VeePulse checks your site on a chosen interval and can email you when it detects downtime and again when the site recovers.

That is particularly useful when you're the person who would otherwise be the first to hear about a problem from a customer.