Website down - but only on specific wifi networks

Hi, We have this occasional issue that our website goes down - but only on specific Wifi networks. For example, nobody can get to the site from our office, but next door or on mobile internet it’s fine. It happens a few times a month, and not just on one network; we’ve seen it in at least three so far. Any ideas what might be causing it? It’s a pretty straightforwards WordPress site, nothing too fancy. And the error message is the usual:

The connection has timed out The server at is taking too long to respond. The site could be temporarily unavailable or too busy. Try again in a few moments.

It’s happening right now in our office… Thanks, Jussi

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Same here.

I am in Brazil, when connect by Wifi, it works. When connect by 4G, the server says it is not ERR_ADDRESS_UNREACHABLE…

Same situation. :(

Some users have reported similar problems with 10.10.2

Looking true you attempts, I would suggest following additional steps.

Reset WiFi settings:

Turn Off Wi-Fi from the Wireless menu item

From the OS X Finder, hit Command+Shift+G and Copy/Paste the following path:

/Library/Preferences/SystemConfiguration/ Select following files:



and move them to Desktop (do not delete for now). This forces OS X to recreate all network configuration files.

Restart WiFi and check.

Solution 2:

If your Ping works (your WiFi connection is fine), then check and modify your DNS server (responsible to connect you to the right website). I would add Google DNS in system preferences- Network -Advanced -DNS and it is the