Unable to access `zen-browser.app` on my network

[Jwiggiff]

Hello! First I just want to say that I love this browser and it is a much better experience compared to Arc on my Windows machine.

However, for some reason I am unable to access the Zen Browser website. This has been somewhat consistent, although occasionally it does load.

Most of the time when I try to access it it loads for a long time and I get an ERR_CONNECTION_RESET issue. I have tried through other browsers and even other devices on my network and still experience the issue. When I tried on my phone through mobile data however, it loads quickly just fine.

Are there any recommended debugging or troubleshooting steps I can follow to try to resolve this? I don't have any unique ad-blocking or DNS setup on my network that I know of. Only thought would be something through my ISP.

[Jwiggiff]

I ran curl -vvI https://zen-browser.app and got this:

16:23:53.744000 [0-0] * Host zen-browser.app:443 was resolved.
16:23:53.747000 [0-0] * IPv6: (none)
16:23:53.748000 [0-0] * IPv4: 18.204.152.241, 18.204.152.241, 18.204.152.241
16:23:53.750000 [0-0] * [HTTPS-CONNECT] adding wanted h2
16:23:53.752000 [0-0] * [HTTPS-CONNECT] added
16:23:53.754000 [0-0] * [HTTPS-CONNECT] connect, init
16:23:53.755000 [0-0] *   Trying 18.204.152.241:443...
16:23:53.757000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:23:53.760000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:23:53.762000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:23:53.783000 [0-0] * schannel: disabled automatic use of client certificate
16:23:53.788000 [0-0] * ALPN: curl offers http/1.1
16:23:53.792000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:23:53.794000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:23:53.796000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:23:54.809000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:23:54.812000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:23:54.815000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:23:55.817000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:23:55.820000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:23:55.823000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:23:56.826000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:23:56.828000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:23:56.832000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:23:57.836000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:23:57.838000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:23:57.841000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:23:58.849000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:23:58.853000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:23:58.857000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:23:59.876000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:23:59.879000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:23:59.882000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:00.888000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:00.891000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:00.893000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:01.899000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:01.902000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:01.905000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:02.917000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:02.920000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:02.922000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:03.928000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:03.930000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:03.933000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:04.947000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:04.950000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:04.954000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:05.973000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:05.976000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:05.979000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:06.996000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:06.999000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:07.003000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:08.008000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:08.011000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:08.015000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:09.028000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:09.032000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:09.036000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:10.051000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:10.054000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:10.058000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:11.069000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:11.072000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:11.074000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:12.091000 [0-0] * [HTTPS-CONNECT] connect -> 0, done=0
16:24:12.093000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 0, done=0
16:24:12.097000 [0-0] * [HTTPS-CONNECT] adjust_pollset -> 1 socks
16:24:12.994000 [0-0] * Recv failure: Connection was reset
16:24:12.996000 [0-0] * schannel: failed to receive handshake, SSL/TLS connection failed
16:24:12.999000 [0-0] * [HTTPS-CONNECT] connect, all attempts failed
16:24:13.001000 [0-0] * [HTTPS-CONNECT] connect -> 35, done=0
16:24:13.004000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(block=0) -> 35, done=0
16:24:13.006000 [0-0] * [HTTPS-CONNECT] Curl_conn_connect(), filter returned 35
16:24:13.008000 [0-0] * closing connection #0
curl: (35) Recv failure: Connection was reset

[Jwiggiff]

Upon further investigation it seems I can also access it through a VPN on my home network. I also tried changing the DNS on my router which did not seem to help. Is my IP somehow blocked?

[IGN-Styly]

@Jwiggiff could you please test connecting to other cloudflare protected services, or use mobile data. This issue is most likely a firewall tho.

[ProgramminCat]

I had the exact same issue, and upon running curl -vvI https://zen-browser.app, I got the exact same result. Mobile data works for me, but my internet doesn't.

[ProgramminCat]

[IGN-Styly]

Its likely a firewall issue, or ISP, if you want to resolve this issue contacting your isp is most likely the solution.

[ProgramminCat]

Looks like the website works on my phone on Wi-Fi, so it's probably an issue with my PC, so I'll try to fix it

[IGN-Styly]

@ProgramminCat try other browsers, and try a live ISO. If this is all you can close the issue.

[ProgramminCat]

Chromium and Edge worked for me, but Zen and Firefox don't work.

[ProgramminCat]

I tried Firefox nightly and it didn't work. So maybe Firefox-based browsers are handling something about my network wrong

[ProgramminCat]

It's weird, because I've never had an issue before on any website, Cloudflare or not

[ProgramminCat]

And now the website doesn't work on my Chromium based browsers anymore.

[sasannnn]

Every other day Zen Browser website is not accessible for me.

I'm excited about Zen and want to introduce it to my friends but imagine telling your friends about a new browser, where their own website don't work.
It's really embarrassing.

[matthewCmatt]

Same here:

$ curl -vvI https://zen-browser.app
* Host zen-browser.app:443 was resolved.
* IPv6: 2600:3c05:e001:d2::8b90:d271, 2600:3c05:e001:d3::8b90:cfd0
* IPv4: 139.144.207.208, 139.144.210.113
*   Trying [2600:3c05:e001:d2::8b90:d271]:443...
* Connected to zen-browser.app (2600:3c05:e001:d2::8b90:d271) port 443
* ALPN: curl offers h2,http/1.1
* (304) (OUT), TLS handshake, Client hello (1):
*  CAfile: /etc/ssl/cert.pem
*  CApath: none
* LibreSSL SSL_connect: SSL_ERROR_ZERO_RETURN in connection to zen-browser.app:443
* Closing connection
curl: (35) LibreSSL SSL_connect: SSL_ERROR_ZERO_RETURN in connection to zen-browser.app:443

Maybe something to do with the CDN used? I'm able to ping the v4 addresses above but can't reach them with http/s