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SSL certificates aren't permanent — they're issued for a fixed period and need renewal, and letting one lapse has immediate, visible consequences.
What Visitors See
The moment a certificate expires, browsers display a full-page security warning before visitors can even reach your site, with language explicitly stating the connection isn't private.
Impact on Trust and Conversions
Most visitors will not click through a security warning, especially on a site they don't already know well. An expired certificate can effectively take a business site offline in terms of practical visitor traffic, even though the server itself is running fine.
SEO Impact
Search engines may also treat the site as insecure during the lapse, potentially affecting rankings until the certificate is renewed and the issue resolved.
Why It Happens
Manually managed certificates get forgotten, especially annual paid certificates without automated renewal reminders. Let's Encrypt certificates expire every 90 days specifically to encourage automated renewal rather than manual tracking.
How to Never Deal With This
Use auto-renewing Let's Encrypt certificates through Plesk, which CyberNet configures by default — renewal happens automatically weeks before expiration, with no action required from you.
