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SSL & Security

What Happens When an SSL Certificate Expires

An expired SSL certificate makes browsers warn visitors and block the site until the certificate is renewed.

Rai AnsarFounder of Visual Sentinel9 min read

What Happens When an SSL Certificate Expires

What Happens When an SSL Certificate Expires?

When an SSL certificate expires, browsers display security warnings like 'Your connection is not private,' blocking user access to the website. An expired certificate fails certificate-validity checks.

What Browser Warnings Appear with an Expired SSL Certificate?

Browsers like Chrome, Firefox, and Safari display specific security warnings. Google Chrome presents a prominent "Your connection is not private" error page. Mozilla Firefox shows a "Warning: Potential Security Risk Ahead" message with details about the expired certificate. Apple's current WebKit strings use "This Connection Is Not Secure" for an insecure connection.

How Does an Expired SSL Certificate Impact Website Accessibility?

Users cannot access the website without bypassing security warnings. Bypassing these warnings is highly discouraged for security reasons. Most visitors stop at the warning rather than clicking through it. Certificate expiry prevents the browser from establishing trust in the server certificate.

What Are the Business Consequences of an Expired SSL Certificate?

An expired certificate makes browsers warn visitors before they can continue, so people leave instead of completing what they came to do. Renew the certificate and reinstall it to clear the warning.

Visitors who leave after a security warning may not complete their purchase.

How Does Visual Sentinel Check SSL Certificate Expiry?

Visual Sentinel checks the certificate on a schedule through SSL monitoring and sends reminders before expiry, for teams to review. Renew the certificate before the expiry date. Visual Sentinel checks uptime, performance, SSL, DNS and visual changes. Content monitoring starts on Starter.

What Specific SSL Monitoring Features Does Visual Sentinel Offer?

Visual Sentinel offers certificate validity checks and expiry reminders. The system monitors certificate validity periods, with reminders 13, 3, and 1 days before expiration (optional 20 and 6). Review the certificate chain when investigating browser trust errors.

How Does Visual Sentinel's Alert System Ensure Timely Renewals?

Visual Sentinel's alert system notifies users when a check finds a problem. This allows immediate action to renew certificates. The platform checks uptime, performance, SSL, DNS and visual changes, with content monitoring from Starter, to catch issues early. Notifications are configurable via email, Slack, and webhooks. Visual Sentinel Solo at $15/month (or $153/year) covers SSL, DNS, visual, and performance for 10 monitors, with visual monitoring on 1 site. New users see their site's first check with no card, then start a 7-day trial (card required) or subscribe. Start a trial.

What Are the Technical Steps to Renew an Expired SSL Certificate?

To replace an expired certificate, ask the certificate authority for a new one, complete its domain check, and install the new certificate on the server. Some authorities, including Let's Encrypt, can renew with the existing key and CSR. The steps depend on the authority and the server. This process replaces the expired certificate and restores secure communication.

What Is a Certificate Signing Request (CSR) and Why Is It Needed?

A CSR is a signed block of encoded text. It carries the public key and a distinguished name, and it can include optional attributes. The private key stays on the server. You generate a new CSR from your web server or hosting control panel. Certificate Authorities use the CSR to create your new SSL certificate. This ensures the certificate binds to your specific server and domain.

How Do You Install a New SSL Certificate on a Server?

You install the new certificate and its intermediates on the web server. The root stays in the browser or operating-system trust store. Specific installation steps vary by server software (e.g., Apache, Nginx, IIS). After installation, restart your web server to apply the changes. Finally, verify the installation using an SSL Checker tool to confirm proper setup and expiration date.

How Do Visual Sentinel's Other Checks Complement SSL Checks?

Visual Sentinel checks uptime, performance, DNS and visual changes alongside SSL. Content monitoring starts on Starter.

What Is Uptime Monitoring and Its Role in Website Health?

Uptime monitoring checks website availability. Visual Sentinel uptime checks run every 5 minutes on Solo and Starter, and every minute on Business and Agency. It detects general site availability issues for investigation. If a server is down, SSL checks cannot even be performed. This layer provides foundational website health data.

DNS monitoring records scheduled snapshots and alerts when records change. DNS issues can prevent browsers from locating your website. Incorrect DNS records can also impact SSL validation and renewal processes. Review DNS records when investigating domain resolution or SSL validation. Visual Sentinel Starter at $30/month (or $306/year) covers 15 monitors, including content monitoring.

How Do Visual Sentinel's Features Compare to Competitors like Pingdom and UptimeRobot for SSL Monitoring?

Visual Sentinel offers dedicated SSL monitoring features like validity checks and expiry reminders, with reminders 13, 3, and 1 days before expiration (optional 20 and 6). Pingdom and UptimeRobot also check certificate expiry. Visual Sentinel checks the certificate on a schedule and sends reminders 13, 3 and 1 days before expiry, with optional reminders at 20 and 6 days.

What Are the SSL Monitoring Capabilities of Pingdom?

Pingdom (SolarWinds) offers basic SSL certificate expiry monitoring. It can alert a configured number of days before certificate expiry. Pingdom's minimum check interval is 1 minute. It does not explicitly list chain validation or revocation status checks as core features.

How Does UptimeRobot's SSL Monitoring Compare in Terms of Cost and Features?

UptimeRobot's paid Solo plan offers SSL monitoring from $13/month ($12 billed annually); the Free plan does not include it. It tracks certificate expiry dates. UptimeRobot checks SSL expiration once every 24 hours; Solo uptime checks run every 60 seconds. Visual Sentinel includes SSL checks alongside its other monitoring layers.

Visual Sentinel checks availability, performance, SSL, DNS and visual changes, with content checks from Starter. Review Visual Sentinel's monitoring results alongside your maintenance and incident-response procedures.

Run a website of your own? Read about keeping watch over your own website, so an alert tells you when something on it breaks.

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Common questions

What Happens When an SSL Certificate Expires?

When an SSL certificate expires, browsers display security warnings like 'Your connection is not private,' blocking user access to the website.

What Are the Business Consequences of an Expired SSL Certificate?

An expired certificate makes browsers warn visitors before they can continue, so people leave instead of completing what they came to do. Renew the certificate and reinstall it to clear the warning.

How Does Visual Sentinel Check SSL Certificate Expiry?

Visual Sentinel checks the certificate on a schedule and sends reminders before expiry. Teams still need to renew and install the certificate.

What Are the Technical Steps to Renew an Expired SSL Certificate?

To replace an expired certificate, ask the certificate authority for a new one, complete its domain check, and install the new certificate on the server. Some authorities, including Let's Encrypt, can renew with the existing key and CSR. The steps depend on the authority and the server. This process replaces the expired certificate.

How Do Visual Sentinel's Other Checks Complement SSL Checks?

Visual Sentinel checks uptime, performance, DNS and visual changes alongside SSL. Content monitoring starts on Starter.

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