“Safari cannot open the page because the server cannot be found”

Troubleshooting
1

Summary
I just created a Mattermost account and a Cloud instance. I waited through the animations while the instance was being created on the Mattermost servers. Now I have an instance URL but Safari can’t load the page.

Note: I’m on an iPad Pro so I’m unable to check other browsers, noodle in DevTools, etc etc.

Steps to reproduce

  1. Create a new account on iPad
  2. Try to access your instance via your unique URL

Expected behavior
My browser can connect to the server so I can use Mattermost.

Observed behavior

  • No page load.
  • Browser error: “Safari cannot open the page because the server cannot be found”

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2

Aaaand nevermind. :slight_smile:

There must be a delay between when the wizard reports that the instance in spun up and when it’s actually available.

For me, that was between 5–10 minutes.

My instance is now available.

3

Hi Ash,

welcome to Mattermost and thanks for posting your solution :slight_smile: I just want to add that this most likely is caused by a negative DNS caching, so when you tried to access the subdomain and the DNS record has not been created, your client or resolvers DNS cache might have stored the NXDOMAIN result for a few minutes which causes the delay for you then in the end.
If you ever experience something like this again, you can try to flush your local DNS cache (there are several ways to do that, depending on the operating system, on Windows, f.ex., you would run ipconfig /flushdns in an elevated command prompt) and on iPad/iPhone, this usually works by toggling airplane mode.

Best,
Alex

4

I am having a similar issue.
I am on Mac OS Sonoma 14.5 with an Apple M3 pro card. I just created a Mattermost server using docker. everything seems to be running fine in docker, but I cannot access my new domain in Safari or in Chrome. I get the error message that the server cannot be found.
I tried flushing the DNS cache, but it did not help.
Any advice would be more than welcome since this is my first time deploying a Mattermost server.
Thank you

5

What URL are you using to access the Mattermost instance? Have you tried http://127.0.0.1:8065 ?

6

Thanks John! I was trying with http://<YOUR_MM_DOMAIN>:8065/
I tried with your link and was able to create my account and the organization. I will have to work on the websocket error next, but already found the post where you and John Combs gave some solutions :slight_smile:

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