Windows
Expired SSL certificate caused a website not secure warning
The hosted website was showing a browser warning that the connection was not secure because its SSL certificate had expired. The certificate was renewed and reissued, and the site should return to a secure state after propagation.
Killed once by someone from XL.net, on 2026-06-19.
What you see
- Browser shows a 'not secure' or SSL certificate warning when opening the website
Why it happens
Likely The website's SSL certificate had expired
When it shows up
A user opens the website and the browser reports the connection is not secure
You are in this case if:
- Browser security indicator shows the site is not secure
- Certificate details show the SSL certificate is expired
1 fix below
The steps that killed it
The steps are behind a quick check
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Someone from XL.net killed this on a Windows computer on 2026-06-19. It is written up from that one repair, so it cites no outside page.