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Likely fix

Fix: Website shows security or SSL warning

A browser security warning usually means the SSL certificate is expired, invalid, not trusted, mismatched, or your device clock is wrong.

Quick answer

Check your device date and time first. If the warning appears on every device, the website owner likely needs to fix the SSL certificate.

Important warning

Do not bypass SSL warnings to enter sensitive information unless you fully trust the network and know exactly why the warning appears.

Try this

  1. 1 Check your device date, time, and time zone.
  2. 2 Reload the website.
  3. 3 Try another browser.
  4. 4 Try another device or mobile data.
  5. 5 Do not enter passwords or payment details while the warning appears.
  6. 6 If you own the website, check whether the SSL certificate expired.
  7. 7 If the certificate was just renewed, restart the web server or hosting SSL service if needed.
  8. 8 Make sure the certificate matches the exact domain, including www versus non-www.

Common causes

SSL certificate expired.

Certificate does not match the domain.

Website redirects to the wrong hostname.

Device clock is wrong.

Public WiFi or security software is intercepting traffic.

Certificate chain is incomplete.

What to check next

  • Check date and time on your device.
  • Check whether the warning appears on mobile data.
  • Check whether the warning appears for www and non-www.
  • Check whether the certificate expired.
  • Check whether the site redirects correctly to HTTPS.

FAQ

Why does a website show a security warning?

The SSL certificate may be expired, invalid, mismatched, incomplete, or your device clock may be wrong.

Is it safe to ignore an SSL warning?

Usually no. Do not enter passwords, payment details, or private information while a security warning is showing.

Can the wrong date and time cause SSL errors?

Yes. If your device clock is wrong, valid certificates can appear expired or not yet valid.

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