I have not changed my codebase in multiple weeks or released a new deploy. This morning I noticed on Safari that when I visit my site URL I get an error saying “Safari can’t establish a secure connection”. Tested on Firefox, and similar message: “Secure Site Not Available”. In Chrome, I see “This site can’t provide a secure connectionwww.mapforgrasslands.org sent an invalid response. ERR_SSL_PROTOCOL_ERROR.”
I have tried clearing my cache on all browsers, and also opening the URL in incognito windows, but error still appears.
In my “Domain management” tab in Netlify, I am using the default “Let’s Encrypt” for my SSL certificate. Nothing looks like an error here, but I am seeing it was updated on Mar 23 at 4:51 PM. Not sure if that is related to the error, but given the timing (I just noticed the error today) it might be worth mentioning.
As @dig mentioned, the site seems to be using HTTPS. I do see on the account that the SSL Certificate was updated on March 23, 2024. Visiting the site also resolves properly with SSL. Also Netlify name servers are configured for DNS:
dig mapforgrasslands.org NS +trace | tail -n 6
mapforgrasslands.org. 3600 IN NS dns1.p09.nsone.net.
mapforgrasslands.org. 3600 IN NS dns2.p09.nsone.net.
mapforgrasslands.org. 3600 IN NS dns3.p09.nsone.net.
mapforgrasslands.org. 3600 IN NS dns4.p09.nsone.net.
;; Received 138 bytes from 198.51.44.73#53(dns3.p09.nsone.net) in 30 ms
Could you let us know if you’re still seeing issues?
Hello, thank you for following up. I think I have narrowed down the issue to something that is more router related than hosting.
I am seeing this error when I access the site from my home Wifi network, but when I access it using my phone (Wifi turned off, only mobile data) I do not see this error.
Additionally, I heard from some users of the site that they are seeing an error to this effect. Here is what an IT specialist sent me:
“For this individual, Safari was indicating that the website was unsecure and converting the URL to HTTP and displaying that the website could not be displayed. Chrome in the other hand kept it in HTTPS but gave a message that the website was being block by Plume which isn’t something we deploy to our systems. The modem/router that is provided by this staff’s ISP is Hitron and based on what I’ve come across, Plume is integrated into these. I suggested that he uses a web proxy for the time being to access the website since his router was likely the one blocking his access.”
So it sounds like Plume, or some settings on a router (including mine maybe?) is blocking access. I can’t do much about a user’s router configuration, so I guess I’m wondering is there anything I can do on the Netlify side to prevent this warning message?
Hey there! Sadly if it’s a router-based or ISP issue, there wouldn’t be a way for us to prevent what’s happening with the network. It would be best to contact the ISP to get clarification on why these blocks are in place. I apologize we can’t be more helpful about that!
